Article List

530 articles

Okutama Area

Looking Into Ryokan Arasawaya

A tiny ryokan with just 3 guest rooms, a 5-minute walk from JR Okutama Station, where you can enjoy water from Tsuru no Yu Onsen in a private bath. I also checked the Rakuten Mobile signal.

2026-10-07

Kawaguchiko & Fuji Five Lakes Area

I Looked Into Dog Villa Fuji-Kawaguchiko

All 7 villas are private whole-villa rentals, each with its own dog run, an in-room hot spring, and a barrel sauna, built for staying with your dog. I also checked the Rakuten Mobile signal conditions.

2026-10-07

Kawaguchiko & Fuji Five Lakes Area

I Looked into Gramercy Village Yamanakako Glamping&Sauna

It's a glamping spot where you can stay in a dome tent or an American trailer, and there's also a private dome-style sauna. I checked the Rakuten Mobile signal conditions too.

2026-10-07

Atami Area

I Looked into Heartpia Atami

This is a hot spring hotel in Izusan, Atami, that owns two Izusan Onsen springs of its own. I also checked the Rakuten Mobile signal conditions.

2026-10-07

Okutama Area

Looking into Hikawa Campground

A campground about a 5-minute walk from JR Okutama Station, with free-site tent camping on the riverbed plus lodge and bungalow stays. I also checked the Rakuten Mobile signal conditions.

2026-10-07

Atami Area

I Looked into Atami Onsen Yunoyado Hiratsuru

This seafood inn sits right next to the sea and has open-air baths and free-flowing hot spring water. I also checked the Rakuten Mobile signal conditions.

2026-10-07

Okutama Area

A Look at Kabutoya Ryokan

This is a ryokan in the Kazuma area of Hinohara Village, with a thatched-roof main building. I also checked the Rakuten Mobile signal conditions.

2026-10-07

Okutama Area

Looking into Kankoso

Kankoso is a ryokan about a 5-minute walk from JR Okutama Station, with guest rooms that look down on the Nippara River stream. I also checked the Rakuten Mobile signal conditions.

2026-10-07

Atami Area

A Look at KKR Hotel Atami

A hotel in Atami where you can enjoy a private hot spring source that wells up on the property, in a panoramic large bath on the 7th floor. I also checked the Rakuten Mobile signal conditions.

2026-10-07

Kawaguchiko & Fuji Five Lakes Area

A Look at LE NIDO Yamanakako

A glamping spot with just three dome tents in a conifer forest, every one with a view of Mt. Fuji. I also checked the Rakuten Mobile signal conditions.

2026-10-07

Okutama Area

Looking into Okuakigawa Village

A facility in the Akigawa Valley in Hinohara Village with 9 private cottages, a campground, and BBQ houses. I also checked the Rakuten Mobile signal conditions.

2026-10-07

Okutama Area

Looking into Tokyo Okutama Onsen Okutamaji

This is a ryokan in the Futamatao area of Ome that reopened after renovations on July 18, 2026, with a new open-air bath right in front of a clear stream. I also checked the Rakuten Mobile signal conditions.

2026-10-07

Kawaguchiko & Fuji Five Lakes Area

I Looked Into Private Villa Glamping Fuji Yamanakako

This glamping facility has 7 units in total, a mix of villas and dome tents, and every unit comes with a private in-room hot spring, a private pool, and a barrel sauna. I also checked the Rakuten Mobile signal conditions.

2026-10-07

Kawaguchiko & Fuji Five Lakes Area

I Looked Into RetreatCamp Mahoroba

This is an accommodation facility in Fujikawaguchiko with six room types, including a Pao tent, a trailer house, and dome tents. I also checked the Rakuten Mobile signal conditions.

2026-10-07

Kawaguchiko & Fuji Five Lakes Area

Looking into Saiko Camp Village Gnome

This campground by Lake Saiko has woodland sites, lakeside sites, gel tents, and trailer houses. I also checked the Rakuten Mobile signal conditions.

2026-10-07

Atami Area

A Look at Shukaen Yunohana-zen

This inn in Atami says every room has views of the sea and the night scenery, and it has an open-air rooftop bath with a panoramic view. I also checked the Rakuten Mobile signal conditions.

2026-10-07

Kawaguchiko & Fuji Five Lakes Area

Looking into the 508 | CAMP |

This campground in Yamanakako Village has an official site that introduces three divisions: camping, sauna, and café. I also checked the Rakuten Mobile signal conditions.

2026-10-07

Kawaguchiko & Fuji Five Lakes Area

Looking Into Glamping Village TOTONOI Fuji Yamanakako

A glamping facility with seven dome tents and cottages in total, featuring two types of private saunas: an igloo sauna and a trailer sauna. I also checked the Rakuten Mobile signal conditions.

2026-10-07

Atami Area

Looking into Atami Seaside Spa & Resort

A natural hot spring hotel where every room has an ocean view, about a 10-minute walk from Atami Station. I also checked the Rakuten Mobile signal conditions.

2026-10-06

Kawaguchiko & Fuji Five Lakes Area

I Looked Into AWAUMI Fujikawaguchiko Resort

This resort has 16 units in total, including villas, domes, and cabins, and every one has its own natural hot spring bath and sauna. I also checked the Rakuten Mobile signal conditions.

2026-10-06

Kawaguchiko & Fuji Five Lakes Area

Checking Out GLAMP DOME Fuji Oshino

A glamping site in Oshino Village where all 8 units come with their own private hot spring bath. I also looked into the Rakuten Mobile signal conditions.

2026-10-06

Kawaguchiko & Fuji Five Lakes Area

I Looked into Gran Farm Fuji Kawaguchiko

This is a glamping spot on a hilltop with views of Mt. Fuji and Lake Kawaguchi, where you can book a 7 m diameter dome tent all to yourself. I also checked the Rakuten Mobile signal conditions.

2026-10-06

Kawaguchiko & Fuji Five Lakes Area

Looking Into Hakkai Konohanakan

A secluded inn near Oshino Hakkai where all 5 rooms come with a semi-open-air private bath and a private garden. I also checked the Rakuten Mobile signal conditions.

2026-10-06

Karuizawa Area

Looking into Hoshinoya Karuizawa

This is a 77-room resort themed on a “valley village,” and a free shuttle bus (reservation required) runs from Naka-Karuizawa Station. I also checked the Rakuten Mobile signal conditions.

2026-10-06

Atami Area

Looking into Hotel New Akao

A resort hotel on the cliffs of the scenic Nishikigaura coast, with three large baths and an ocean pool. I also checked the Rakuten Mobile signal conditions.

2026-10-06

Atami Area

Looking into Hotel Oonoya

A hot spring hotel in Atami, proud of its Roman bath that holds 300 people and an open-air bath overlooking Sagami Bay. I also checked the Rakuten Mobile signal conditions.

2026-10-06

Atami Area

Looking into Atami Onsen Hotel Yumeiroha

A hot spring hotel with 100% free-flowing source water, about a 10-minute walk from Atami Station. I also checked the Rakuten Mobile signal conditions.

2026-10-06

Kawaguchiko & Fuji Five Lakes Area

I Looked Into Kanoa Fuji Yamanakako Glamping Resort

A glamping resort in Yamanakako where every room has an open-air natural hot spring bath and a 100-inch dome theater. I also checked the Rakuten Mobile signal conditions.

2026-10-06

Karuizawa Area

I Looked Into Karuizawa Prince Hotel East

This is an Art Forest-themed highland resort hotel, about a 10-minute walk from Karuizawa Station. I also checked the Rakuten Mobile signal conditions.

2026-10-06

Kawaguchiko & Fuji Five Lakes Area

I Looked Into Odakyu Yamanakako Forest Cottage

A campground with cottages and auto-camping sites spread through the forest on the shore of Lake Yamanakako, where overnight guests can use the bathhouse for free. I also checked the Rakuten Mobile signal conditions.

2026-10-06

Atami Area

Looking into Hoshino Resorts Risonare Atami

This resort hotel sits on a hilltop with views of Atami's sea and sky, and every guest room is 60㎡ or larger. I also checked the Rakuten Mobile signal conditions.

2026-10-06

Karuizawa Area

Checking Out Sakudaira Plaza 21

Just a 2-minute walk from Sakudaira Station, this hotel comes with a health land spa where you can stay overnight or just drop in for a bath. I also checked the Rakuten Mobile signal conditions.

2026-10-06

Kawaguchiko & Fuji Five Lakes Area

I Looked Into Shoji Mount Hotel

A hotel on the shore of Lake Shoji where you can enjoy views of Mt. Fuji and the lake. I also checked the Rakuten Mobile signal conditions.

2026-10-06

Kawaguchiko & Fuji Five Lakes Area

Looking Into Tenku no Onsen Villa Tsumugi Kawaguchiko

A private villa where every unit has a private sauna with a view of Mt. Fuji and an open-air natural hot spring bath. I also checked the Rakuten Mobile signal conditions.

2026-10-06

Atami Area

Checking Out THE BASE GLAMPING ATAMI PREMIER

Every villa at this Atami glamping resort has a private open-air bath filled with free-flowing water from the property's own hot spring, and the shuttle from Atami Station is reservation-only. I also checked the Rakuten Mobile signal situation.

2026-10-06

Karuizawa Area

I Looked Into The Prince Karuizawa

This is an adults-oriented hotel under the top-tier brand of Prince Hotels, and you can get there by free pickup bus from the south exit of Karuizawa Station. I also checked the Rakuten Mobile signal conditions.

2026-10-06

Karuizawa Area

Looking into Ancient Hotel Asama Karuizawa

It's a small hotel with just 13 rooms, and the official site says every stone in the large public bath is a “crystal stone.” I also checked the Rakuten Mobile signal conditions.

2026-10-02

Atami Area

Looking into Atami no Iyashi Shin Kadoya

A hot spring ryokan where every room has its own design (the “Ikkyaku Ittei” style) and both dinner and breakfast are served in your room. I also checked the Rakuten Mobile signal.

2026-10-02

Atami Area

Looking into Atami Pearl Star Hotel

A hotel right in front of Omiya no Matsu, with a 12 m infinity bath on the top floor. I also checked the Rakuten Mobile signal conditions.

2026-10-02

Kawaguchiko & Fuji Five Lakes Area

Looking into Hotel Mifujien

Hotel Mifujien is an onsen hotel on the shore of Lake Kawaguchi with a large public bath and an open-air bath overlooking Mt. Fuji and the lake. I also checked the Rakuten Mobile signal conditions.

2026-10-02

Kawaguchiko & Fuji Five Lakes Area

I Looked into Breeze Bay Lake Resort Kawaguchiko

Breeze Bay Lake Resort Kawaguchiko is a lakeside hotel with a large bath filled with natural hot spring water from the foot of Mt. Fuji, a sauna, and a second-floor observation restaurant. I also checked the Rakuten Mobile signal conditions.

2026-10-02

Kawaguchiko & Fuji Five Lakes Area

Looking into Fuji Lake Hotel

Fuji Lake Hotel, which says it was founded in 1932, is a lakeside hotel on Lake Kawaguchi. It has a large communal bath fed by Kawaguchiko hot spring water, plus suites with open-air baths and private baths. I also checked the Rakuten Mobile signal.

2026-10-02

Kawaguchiko & Fuji Five Lakes Area

Looking into Fuji Premium Resort

Fuji Premium Resort has a hotel, a cottage-style Forest Village, guest rooms where you can stay with your dog, and a spa facility called FOREST SPA. I also checked the Rakuten Mobile signal conditions.

2026-10-02

Kawaguchiko & Fuji Five Lakes Area

I Looked Into Fuji Saiko Onsen Izumi no Yu

Fuji Saiko Onsen Izumi no Yu, in Saiko in Fujikawaguchiko, is a day-use hot spring known for its big open-air bath surrounded by natural rocks and its “Kuroshio bath.” I also checked the Rakuten Mobile signal conditions.

2026-10-02

Kawaguchiko & Fuji Five Lakes Area

I Looked Into Fujisan Yogan no Yu Sensui

Fujisan Yogan no Yu Sensui in Fujiyoshida is a day-use bathing facility that uses Mt. Fuji spring water. It has a Himalayan rock salt bath, a microbubble open-air bath, and a sauna. I also checked the Rakuten Mobile signal conditions.

2026-10-02

Karuizawa Area

Looking into GLAMDAY STYLE HOTEL & RESORT KYU-KARUIZAWA

A hotel in the Kyu-Karuizawa area with an onsen bath featuring a dry sauna and a steam sauna. Its opening was announced for August 2025. I also checked the Rakuten Mobile signal.

2026-10-02

Karuizawa Area

Looking into Hotel Harvest Kyukaruizawa

A hotel with a hinoki cypress indoor bath, an open-air bath, and a natural hot spring rock bath. I also checked the Rakuten Mobile signal conditions.

2026-10-02

Karuizawa Area

I Looked Into Hotel Karuizawa Elegance

This hotel has rooms in an East Building and a South Building, and its buffet-style breakfast is known for its signature French toast. I also checked the Rakuten Mobile signal conditions.

2026-10-02

Atami Area

I Looked Into Atami Izusan Onsen Hotel New Sagamiya

A hot spring inn where all 45 rooms face the sea, with three private open-air baths. I also checked the Rakuten Mobile signal conditions.

2026-10-02

Karuizawa Area

Looking Into Hotel Rosso Karuizawa

A 33-room hotel about a 5-minute walk from the north exit of Karuizawa Station. I also checked the Rakuten Mobile signal conditions.

2026-10-02

Atami Area

Looking into Itoen Hotel Atamikan

This hotel sits in a shopping street just a 2-minute walk from Atami Station, and it has a large public bath fed by its own hot spring source and made with hokutolite. I also checked the Rakuten Mobile signal conditions.

2026-10-02

Karuizawa Area

I Looked Into Kyu-Karuizawa Hotel Shinonome

A resort hotel with 18 rooms in a villa area, a 9-minute walk from Karuizawa Station. I also checked the Rakuten Mobile signal conditions.

2026-10-02

Karuizawa Area

I Looked Into Legrand Karuizawa Hotel & Resort

This resort hotel spreads three guest buildings across roughly 70,000 tsubo of grounds and has its own day-trip hot spring, Happu Onsen. I also checked the Rakuten Mobile signal conditions.

2026-10-02

Atami Area

Looking into Aji to Yu no Yado New Tomiyoshi

A hot spring inn in Shimotaga, Atami, with 11 private open-air baths. I also checked the Rakuten Mobile signal conditions.

2026-10-02

Atami Area

Looking into Sakuraya Ryokan

Sakuraya Ryokan is a hot spring inn about a 5-minute walk from Atami Station (per the official site), with in-room dining for both dinner and breakfast. I also checked the Rakuten Mobile signal conditions.

2026-10-02

Atami Area

Looking into Sanpeiso

A small hot spring inn with two open-air baths, the Upper Bath and the Lower Bath. I also checked the Rakuten Mobile signal conditions.

2026-10-02

Kawaguchiko & Fuji Five Lakes Area

I Looked into Wakakusa no Yado Maruei

Wakakusa no Yado Maruei is a hot spring inn on the shore of Lake Kawaguchi, with top-floor open-air baths that look out on Mt. Fuji and the lake. I also checked the Rakuten Mobile signal conditions.

2026-10-02

Kawaguchiko & Fuji Five Lakes Area

Looking into Yamadaya Hotel

Yamadaya Hotel on the shore of Lake Shojiko is advertised as offering views of Mt. Fuji and the lake from every room. I also checked the Rakuten Mobile signal conditions.

2026-10-02

Kawaguchiko & Fuji Five Lakes Area

Looking Into Yamagishi Ryokan

Yamagishi Ryokan in Kawaguchiko Onsen is a hot spring inn with a “lake-top bath” overlooking Lake Kawaguchi, plus open-air baths. I also checked the Rakuten Mobile signal conditions.

2026-10-02

Nasu Highlands Area

I Looked Into Shiobara Onsen Akazawa Onsen Ryokan

Shiobara Onsen Akazawa Onsen Ryokan lets you enjoy unadulterated, non-circulated source hot spring water in two baths, the "Kawa no Yu" (River Bath) and the "Yama no Yu" (Mountain Bath). I also checked the Rakuten Mobile signal conditions there.

2026-10-01

Atami Area

I Looked Into ATAMI Sekaie

ATAMI Sekaie is a luxury resort perched on the heights of Atami, where every room comes with an open-air bath overlooking the Pacific Ocean. I also checked the Rakuten Mobile signal conditions there.

2026-10-01

Kawaguchiko & Fuji Five Lakes Area

I Did Some Research on Fuji Shoen Hotel

Perched at an elevation of 1,000 meters, Fuji Shoen Hotel is a hot spring hotel known for its "Fuji Lava Bath," lined wall-to-wall with Fuji lava rocks. I also checked out the Rakuten Mobile signal conditions there.

2026-10-01

Atami Area

I Looked Into Furuya Ryokan

Furuya Ryokan is a long-established inn in Atami, founded in 1806, with a 100% private hot spring source. I also checked the Rakuten Mobile signal conditions there.

2026-10-01

Kawaguchiko & Fuji Five Lakes Area

I Looked Into Yamanakako Hirano Onsen Ishiwari no Yu

Yamanakako Hirano Onsen Ishiwari no Yu is a day-trip hot spring facility featuring a wooden dome-shaped building that makes use of chestnut wood roof framing. I also checked the Rakuten Mobile signal conditions there.

2026-10-01

Nasu Highlands Area

I Looked Into MORINEAL VILLAGE Nasu Kogen

A glamping facility in Nasu Kogen known for its 'Dom'up' dome tent suspended between two trees and its Finnish sauna. I also checked on Rakuten Mobile signal conditions.

2026-10-01

Nasu Highlands Area

I Looked Into Okushiobara Motoyu Odekan

Odekan is a hidden hot spring inn with naturally flowing spring water, and it's a member of the Association to Protect Japan's Secluded Hot Springs. It boasts eight baths including the famous "Sumi-no-yu," and I also checked the Rakuten Mobile signal conditions there.

2026-10-01

Kawaguchiko & Fuji Five Lakes Area

I Looked Into Shizuku, a Ryokan with Mt. Fuji Views and a Private Sauna in Every Room

Shizuku is a ryokan in Yamanakako featuring Nordic-style fully private saunas in all 14 rooms, with views of Mt. Fuji. I also checked the Rakuten Mobile signal conditions there.

2026-10-01

Kawaguchiko & Fuji Five Lakes Area

I Looked Into Shoji Lake Hotel

Shoji Lake Hotel is a ryokan on the shore of Lake Shoji with plenty of ecotourism-friendly activities, and the Rakuten Mobile signal conditions came back with a good AA rating.

2026-10-01

Kawaguchiko & Fuji Five Lakes Area

I Looked Into Shojiko Camping Cottage

Shojiko Camping Cottage is a campground on the shore of Lake Shoji offering tents, bungalows, and cottages, and Rakuten Mobile's signal there came back with a good AA rating.

2026-10-01

Atami Area

I Looked Into SOLACE no Oka

SOLACE no Oka is a campsite in southern Atami that offers a hands-free plan, a barrel sauna, and even a dog run. I also checked the Rakuten Mobile signal conditions there.

2026-10-01

Kawaguchiko & Fuji Five Lakes Area

I Looked Into Village-Run Yamanakako Campground

Village-Run Yamanakako Campground spreads through a forest at an elevation of 1,000 meters, about 2 hours from central Tokyo. I also checked the Rakuten Mobile signal conditions there.

2026-10-01

Atami Area

I Looked Into Sora to Niwa Atami Izusan

Sora to Niwa Atami Izusan renovated in 2025 as a 'wellness inn' where you can enjoy hot springs, sauna, and cold baths all in one space. I also checked the Rakuten Mobile signal conditions.

2026-10-01

Izukogen Area

I Looked Into Izu Coco Glamping Izu Kogen

A glamping facility where you can enjoy six types of natural hot spring baths fed straight from the source. I looked into the hot spring hopping experience unique to Izu Kogen, along with Rakuten Mobile signal conditions.

2026-09-30

Izukogen Area

I Looked Into Izu Grand Village Glamping

A glamping facility adjacent to Izu Granpal Park. I looked into its location, accessible by bus from Izu-Kogen Station, along with Rakuten Mobile signal conditions.

2026-09-30

Izukogen Area

I Looked Into IZU SHABOTEN VILLAGE GLAMPING

A glamping facility right next to Izu Shaboten Zoo. I looked into staying in dome tents with cabins that include bath and toilet facilities, plus the Rakuten Mobile signal conditions.

2026-09-30

Izukogen Area

I Looked Into Izu Uminomori Smile Campground

A campground and auto-camping facility in Fumoto, Ito City. I looked into its location close to the sea and the Rakuten Mobile signal conditions.

2026-09-30

Izukogen Area

I Looked Into Morino Koen, a Stay-Overnight Park in Izu Kogen

A handmade campsite on a mountaintop near Izu Kogen Station. I looked into this park-style campsite where you can enjoy a campfire, BBQ, and a sauna with a great view, as well as the Rakuten Mobile signal conditions there.

2026-09-30

Izukogen Area

I Looked Into Izu Kogen Onsen Ryokan Homare no Hikari Suigetsu

A hot spring ryokan with only 8 rooms, each featuring an open-air bath with a real sense of openness. I looked into what a relaxed stay there might be like, along with the Rakuten Mobile signal conditions.

2026-09-30

Izukogen Area

I Looked Into Izu Kogen Tent Resort

A campsite with tent sites and cabins located in a villa area at the foot of Mt. Omuro. I looked into how convenient the rental gear lineup is, along with the Rakuten Mobile signal conditions.

2026-09-30

Izukogen Area

I Looked Into Izu Kogen Hanare Oyado Yumenoya

A hideaway inn where every room is detached and there's a private open-air rock bath to reserve. I looked into what a private-feeling stay there is like, plus the Rakuten Mobile signal conditions.

2026-09-30

Izukogen Area

I Looked Into Kanade no Mori Resort Forest Glamping

A glamping resort surrounded by a cypress forest. I looked into the facility known for its domestic aged wagyu BBQ, plus checked the Rakuten Mobile signal conditions.

2026-09-30

Izukogen Area

I Looked Into Hotel Kaze no Kaori UMI

This inn overlooks Sagami Bay and is known for its charm of every room having an ocean-view private open-air bath, plus rental baths as well. I looked into bathing while gazing at the ocean, along with the Rakuten Mobile signal conditions.

2026-09-30

Izukogen Area

I Looked Into K's CAMP Izu Kogen Glamping

A glamping facility where you can stay easily in tents equipped with a toilet, shower, and air conditioning. I looked into its convenient access—about a 10-minute walk from Futo Station on the Izu Kyuko Line—and checked the Rakuten Mobile signal conditions.

2026-09-30

Izukogen Area

I Looked Into Yawatano Onsen Village Mori no Yu Kirano Sato

A resort on a 6,600-tsubo property with a variety of bathing facilities and 3 free private baths. I looked into the bathing options at this Kyoritsu Resort property, plus checked the Rakuten Mobile signal conditions.

2026-09-30

Izukogen Area

I Looked Into Omuro no Mori Gyokusui

A hilltop retreat with just 9 rooms, designed for adults. I looked into a stay featuring flowing natural hot spring baths, along with the Rakuten Mobile signal conditions.

2026-09-30

Izukogen Area

I Looked Into Oyado Uchiyama

A hideaway inn where every room comes with its own open-air bath. I looked into what kind of relaxing stay you can have in Izu Kogen, along with the Rakuten Mobile signal conditions.

2026-09-30

Izukogen Area

I Looked Into Nagi no Sho, a Blissful Inn in Izu Kogen

An inn known for its guest rooms with open-air hot spring baths overlooking the sky and sea. I looked into what it's like to have the Izu Kogen scenery all to yourself, plus checked the Rakuten Mobile signal conditions.

2026-09-30

Boso Peninsula Area

I Looked Into Camping Hills Kamogawa

Camping Hills Kamogawa in Kamogawa City is a campsite known for its open-air bath featuring daily-changing herb baths. I also checked out the Rakuten Mobile signal conditions there.

2026-09-29

Boso Peninsula Area

I Looked Into Chikura Onsen Chikura-kan

Chikura Onsen Chikura-kan in Chikura, Minamiboso City, is a hot spring inn with a large communal bath and a private open-air bath, plus free shuttle service from Chikura Station. I also checked out the actual Rakuten Mobile signal conditions there.

2026-09-29

Boso Peninsula Area

I Looked Into Grand Mercure Minami-Boso Resort & Spa

Grand Mercure Minami-Boso Resort & Spa in Tomiura, Minami-Boso City, is a hot spring resort hotel with a free shuttle bus from Tomiura Station. I also checked out the actual Rakuten Mobile signal conditions there.

2026-09-29

Boso Peninsula Area

I Looked Into Gyotakuso Suzukiya

Gyotakuso Suzukiya in Chikura, Minamiboso City is a long-established inn founded in 1899, known for its natural hot springs and local fish dishes. I also checked the Rakuten Mobile signal conditions there.

2026-09-29

Boso Peninsula Area

I Looked Into Hotel Green Plaza Kamogawa

Hotel Green Plaza Kamogawa in Kamogawa City boasts a natural hot spring called Kominato Minori Onsen and ocean views from every room. I also checked out the Rakuten Mobile signal conditions there.

2026-09-29

Boso Peninsula Area

I Looked Into Hotel Nankaiso

Hotel Nankaiso in Shirahama, Minamiboso City, is a hot spring inn with its own private source and a free shuttle bus from Tateyama Station. I also checked out the Rakuten Mobile signal conditions there.

2026-09-29

Boso Peninsula Area

I Looked Into Kamenoi Hotel Kamogawa

Kamenoi Hotel Kamogawa in Kamogawa City is a place offering day-use bathing, with a garden-style large communal bath and a scenic large communal bath overlooking the Pacific Ocean. I also checked the actual Rakuten Mobile signal conditions there.

2026-09-29

Boso Peninsula Area

I Looked Into Kamogawa Onsen Rian

Kamogawa Onsen Rian in Kamogawa City is a collection of detached guest rooms along Futomi Coast, with every room featuring its own private open-air hot spring bath. I also checked the actual Rakuten Mobile signal conditions there.

2026-09-29

Boso Peninsula Area

I Looked Into Kamogawa Seaworld Hotel

Kamogawa Seaworld Hotel in Kamogawa City is an official hotel that lets you enter Kamogawa Seaworld as many times as you like during your stay. I also checked out the actual Rakuten Mobile signal conditions there.

2026-09-29

Boso Peninsula Area

I Looked Into Nanso Shiroyama Onsen Satomi no Yu

Nanso Shiroyama Onsen Satomi no Yu in Tateyama City is a day-trip hot spring known for its high-concentration carbonated spring bath and stone spa, and you can even reach it by bus and on foot from Tateyama Station. I also checked out the actual Rakuten Mobile signal conditions there.

2026-09-29

Boso Peninsula Area

I Looked Into Regina Resort Kamogawa

Regina Resort Kamogawa in Kamogawa City is a resort hotel where every room has an ocean view and dogs are welcome. I also checked out the actual Rakuten Mobile signal conditions there.

2026-09-29

Boso Peninsula Area

I Looked Into Seaside Terrace Chiba Kamogawa

Seaside Terrace Chiba Kamogawa in Kamogawa City is a villa and glamping facility with in-room natural hot spring baths and private pools. I also checked out the actual Rakuten Mobile signal conditions there.

2026-09-29

Boso Peninsula Area

I Looked Into Seasidehouse Yubo

Seasidehouse Yubo is a self-catering guesthouse in Chikura, Minamiboso City, that can also be booked as a whole-building rental. I also checked out the actual Rakuten Mobile signal conditions there.

2026-09-29

Boso Peninsula Area

I Looked Into Shiosai Resort Kamogawa

Shiosai Resort Kamogawa in Kamogawa City is an inn where every room has an ocean view, and you can even enjoy a semi-open-air private hot spring bath with ocean views. I also checked out the Rakuten Mobile signal conditions there myself.

2026-09-29

Boso Peninsula Area

I Looked Into Taibusa Point Nature Park Campsite

Taibusa Point Nature Park Campsite in Minamiboso City is a campsite inside a nature park that can also be reached by city bus from Tomiura Station. I also checked out the actual Rakuten Mobile signal conditions there.

2026-09-29

Boso Peninsula Area

I Looked Into TANDA Kamogawa

TANDA Kamogawa, located in Kamogawa City, is a fully private campsite limited to just one group per day, making the most of its former terraced rice field location. I also checked the actual Rakuten Mobile signal conditions there.

2026-09-29

Boso Peninsula Area

I Looked Into VILLA Ransui

VILLA Ransui in Kamogawa City is an ocean-view villa complex with only 6 units, each featuring its own natural hot spring and private pool. I also checked out the actual Rakuten Mobile signal conditions there.

2026-09-29

Boso Peninsula Area

I Looked Into Oishii Onsen Yumemisaki

Oishii Onsen Yumemisaki in Chikura, Minamiboso City, is a hot spring facility with multiple observation baths, private baths, and even a pool. I also checked out the Rakuten Mobile signal conditions there.

2026-09-29

Hakone Area

I Looked Into Angel Grand Villa Hakone

I looked into Angel Grand Villa Hakone, a whole-building private villa overlooking Lake Ashi from the hills of the Motohakone area. Every villa apparently comes with a natural hot spring, and the facility was previously known under a different name. Rakuten Mobile's official tool didn't show any signal judgment data for this address.

2026-09-25

Karuizawa Area

I Looked Into BEB5 Karuizawa by Hoshino Resorts

This hotel is known for its unique 'Yagura Room,' where the upper level is a bed and the lower level is a sofa. When I checked the Rakuten Mobile signal conditions using the official tool, no rating was displayed this time, so the result came back as unknown.

2026-09-25

Hakone Area

I Looked Into GOURA

I looked into GOURA, a tent house facility in the Gora area of Hakone. It's a pre-opening facility where both tours and overnight stays require reservations in advance. According to Rakuten Mobile's official tool, the signal condition was rated "C."

2026-09-25

Nasu Highlands Area

I Looked Into HABILE Camp Resort Nasu

A camp resort featuring 15 individual constellation-themed zone sites like Gemini and Capricorn, plus a Finnish-style sauna. I also checked into the Rakuten Mobile signal conditions there.

2026-09-25

Hakone Area

I Looked Into Hakone Suishoen

I looked into Hakone Suishoen, a high-end ryokan registered as a Tangible Cultural Property that makes use of a building from the Taisho era. All 23 rooms are suite-style with open-air baths fed by natural hot spring water. According to the official tool, Rakuten Mobile signal conditions came back as a "C" rating.

2026-09-25

Nasu Highlands Area

I Looked Into Wanwan Paradise Premier Shiobara

This is a dog-friendly hotel with no restrictions on breed or number of dogs, and one of its highlights is a natural hot spring with continuously flowing spring water that's also open for day-trip bathing. I actually measured the Rakuten Mobile signal conditions there.

2026-09-25

Karuizawa Area

I Looked Into Karuizawa Marriott Hotel

This hotel lets you enjoy two different hot springs blessed by Mount Asama: Oze Onsen and Shiozawa Onsen. When I checked the Rakuten Mobile signal conditions using the official tool, no result came up this time, so the status is unknown.

2026-09-25

Hakone Area

I Looked Into LUXE Hakone Yumoto

I looked into LUXE Hakone Yumoto, a luxury villa rental with only two buildings total, each rented out exclusively. It's a lavish property where each building apparently comes with its own hot spring bath, private pool, and even a sauna. According to the official tool, the Rakuten Mobile signal condition was rated 'C'.

2026-09-25

Hakone Area

I Looked Into Mori no Yado

I looked into Mori no Yado, a lodge in the Miyagino area of Hakone. It's an extraordinary, healing-themed lodging facility that switched to seasonal operation starting in July 2025. The Rakuten Mobile signal condition came back as a 'C' rating on the official tool.

2026-09-25

Hakone Area

I Looked Into Morito Sora Hakone

I looked into Morito Sora Hakone, a dog-friendly resort where all 12 rooms come with their own open-air bath fed by Gora hot spring water. It's a whole-villa rental with a private dog run. According to the official tool, the Rakuten Mobile signal here was rated "C."

2026-09-25

Nasu Highlands Area

I Looked Into Nasu Hamiru no Mori

This is a full-fledged glamping facility where you can stay in dome tents, complete with pet-friendly sites and a free gelato buffet. I looked into the Rakuten Mobile signal conditions there.

2026-09-25

Nasu Highlands Area

I Looked Into Nasu Queen's Mountain Camp & Lodge

A campsite offering a wide range of stay types from bungalows to glamping, plus horseback riding experiences and handmade attractions. I looked into the Rakuten Mobile signal conditions there.

2026-09-25

Nasu Highlands Area

I Looked Into Nenn Nasu Glamping Village

A glamping facility featuring a private natural hot spring spa and sauna, with an appealing location offering views of the Nasu mountain range. I looked into the Rakuten Mobile signal conditions.

2026-09-25

Karuizawa Area

I Looked Into Nozomi Glamping & Spa Saku x Karuizawa

This is a glamping facility built on a hill overlooking the Saku city area, Karuizawa, and Mount Asama, with every unit equipped with a natural hot spring and sauna. When I actually checked the Rakuten Mobile signal conditions, the overall rating came out as a "C".

2026-09-25

Hakone Area

I Looked Into Setsugekka Bettei Suiun

I looked into Setsugekka Bettei Suiun, an annex of "Toki no Yu Setsugekka" operated by Kyoritsu Resort. It's a high-class hot spring inn for adults, with every room featuring a private open-air bath made of cypress and fed by natural hot spring water. According to the official tool, Rakuten Mobile's signal condition there was rated "C".

2026-09-25

Nasu Highlands Area

I Looked Into Shiobara Green Village Mori no Ideyu Fuku no Yu

This day-use hot spring offers an indoor bath and open-air bath with sodium bicarbonate spring water that meets the conditions for so-called "beautiful skin water," plus a private bath called Taru no Yu. I also actually measured the Rakuten Mobile signal conditions on site.

2026-09-25

Karuizawa Area

I Looked Into Shiotsubo Onsen Hotel

This hot spring inn's main draw is the open-air hot spring bath "Chomeisen," which carries on a hot spring said to have been discovered about 800 years ago. When I checked Rakuten Mobile's signal conditions using the official tool, no rating showed up this time, so the result came back as unknown.

2026-09-25

Nasu Highlands Area

I Looked Into Three Arrows Nasu Camp Village

A multi-facility campground in Nasu with auto campsites, cottages, trailer houses, and even private saunas. I checked out the Rakuten Mobile signal conditions there.

2026-09-25

Aoshima Area

I Looked Into ANA Holiday Inn Resort Miyazaki

A large resort hotel just 7 minutes on foot from Kodomo no Kuni Station, featuring the panoramic hot spring 'Aoshima Onsen.' I also checked out the Rakuten Mobile signal conditions.

2026-09-24

Aoshima Area

I Looked Into Aoshima Fisherman's Beachside Hostel & Spa

A hostel about a 3-minute walk from Aoshima Station, also featuring the natural alkaline hot spring Shinwa no Yu. I also checked out the Rakuten Mobile signal conditions.

2026-09-24

Aoshima Area

I Looked Into Aoshima Grand Hotel

A hot spring hotel just a 7-minute walk from Aoshima Station, with a rooftop open-air bath overlooking the Pacific Ocean. I also checked out the Rakuten Mobile signal conditions there.

2026-09-24

Okutama Area

I Looked Into Hinohara Fujikura Campsite

A campsite limited to just one group per day. Apparently you can enjoy river play and tent saunas there too, so I also checked out the Rakuten Mobile signal conditions.

2026-09-24

Chichibu & Nagatoro Area

I Looked Into Juon no Yu

This is a day-use bathing facility attached to PICA Chichibu inside Chichibu Muse Park. It apparently has an indoor bath with a sauna that you can use for day bathing, so I also checked the Rakuten Mobile signal conditions there.

2026-09-24

Aoshima Area

I Looked Into JR Kyushu Hotel Miyazaki

A station-front hotel adjacent to the west exit of JR Miyazaki Station. I also looked into the Rakuten Mobile signal conditions.

2026-09-24

Kawaguchiko & Fuji Five Lakes Area

I Looked Into THE KUKUNA

It's about a 5-minute bus ride from Kawaguchiko Station, a hot spring ryokan with a view where some rooms even come with their own open-air baths. I heard it used to be called something like "Kaze no Terrace KUKUNA," and I also looked into the Rakuten Mobile signal conditions there.

2026-09-24

Aoshima Area

I Looked Into Kodomo no Kuni (AOSHIMA PICNIC CLUB)

A camping area with glamping, auto camping, and an RV park, located inside a free-admission park about a 1-minute walk from JR Kodomo no Kuni Station. I also looked into the Rakuten Mobile signal conditions.

2026-09-24

Hakone Area

I Looked Into Manjufuku Ryokan

A long-established ryokan founded in 1927, about a 5-6 minute walk from Hakone-Yumoto Station. Apparently it has three private baths fed by natural hot spring water, so I also looked into the Rakuten Mobile signal conditions there.

2026-09-24

Aoshima Area

I Looked Into Miyazaki Shirahama Camp Site

A campground just 3 minutes on foot from the Shirahama Iriguchi bus stop, offering both powered auto campsites and cottages. I also looked into the Rakuten Mobile signal conditions there.

2026-09-24

Aoshima Area

I Looked Into NOT A HOTEL AOSHIMA

A distributed-ownership hotel in Aoshima, Miyazaki, complete with a skateboard park and a pool sauna. I also checked out the Rakuten Mobile signal conditions there.

2026-09-24

Aoshima Area

I Looked Into Phoenix Seagaia Ocean Tower

A large resort tower with ocean views from every room, reachable from Miyazaki Station by free shuttle bus. I also checked out the Rakuten Mobile signal conditions.

2026-09-24

Chichibu & Nagatoro Area

I Looked Into Ryokami Sanso

A standalone lodge right in front of the Hinatanya trailhead on Mt. Ryokami. It seems you can get there by bus from Seibu-Chichibu Station, so I also looked into the Rakuten Mobile signal conditions.

2026-09-24

Nasu Highlands Area

I Looked Into Unkaikaku

Unkaikaku is a room-only inn perched on a hillside in Nasu-Yumoto Onsen, known for its large baths fed by two separate hot spring sources. It's apparently about a 3-4 minute walk from the bus stop, so I also looked into the Rakuten Mobile signal conditions there.

2026-09-24

Karuizawa Area

I Looked Into Yugawa Campground

This is a town-run campground operated by Karuizawa Town. Apparently it's about a 10-15 minute walk from Naka-Karuizawa Station, so I also looked into the Rakuten Mobile signal conditions there.

2026-09-24

Ureshino Onsen Area

I Looked Into Fairfield by Marriott Saga Ureshino Onsen

About a 3-minute walk from Ureshino Onsen Station on the Nishi-Kyushu Shinkansen, this hotel is integrated with a roadside rest stop. I also looked into the Rakuten Mobile signal conditions there.

2026-09-15

Ureshino Onsen Area

I Looked Into Hotel Sakura Ureshino

A hotel with 55 rooms in total, where you can take in a panoramic view of the Ureshino townscape from the 10th-floor observation bath. I also looked into the Rakuten Mobile signal conditions.

2026-09-15

Aso Area

I Looked Into Genryu no Yado Honzantei

A standalone inn in Kurokawa Onsen where all 11 rooms are detached villas, each offering 100% natural hot spring water drawn directly from its own source. I also looked into the Rakuten Mobile signal conditions there.

2026-09-15

Ureshino Onsen Area

I Looked Into Hyakunen no Yu

A day-trip hot spring proud of its abundant beautifying waters drawn from a hot spring source with a hundred-year history. I also looked into the Rakuten Mobile signal conditions there.

2026-09-15

Aso Area

I Looked Into Jigoku Onsen Seifuso

A hidden hot spring inn in Minamiaso Village known for its clothed-bathing "Suzume no Yu," where day-trip bathing is also available. I also looked into the Rakuten Mobile signal conditions there.

2026-09-15

Aso Area

I Looked Into Iyashi no Sato Kiyashiki

A scenic ryokan perched on a hilltop in the Kurokawa Onsen area, known for its silky-smooth beautifying hot spring water. I also looked into the Rakuten Mobile signal conditions there.

2026-09-15

Aso Area

I Looked Into Ryokan Misato

The only inn in Kurokawa Onsen with a sulfur spring whose water color changes over time. I also looked into the Rakuten Mobile signal conditions there.

2026-09-15

Ureshino Onsen Area

I Looked Into Oedo Onsen Monogatari Ureshinokan

A hotel in the Oedo Onsen Monogatari group with its own hot spring source and a buffet-style dinner and breakfast. I also looked into the Rakuten Mobile signal conditions there.

2026-09-15

Ureshino Onsen Area

I Looked Into Oyado Takasago

A traditional inn by the riverside, famous for its hot spring tofu and Saga beef shabu-shabu. I also looked into the Rakuten Mobile signal conditions there.

2026-09-15

Aso Area

I Looked Into Oshitoishi no Oka Campground

A campground on a hill known as a power spot sometimes called the 'sacred site of the Jomon era,' where you can enjoy a 360-degree view. I also looked into the Rakuten Mobile signal conditions there.

2026-09-15

Aso Area

I Looked Into Fujiya

A ryokan in Kurokawa Onsen with all 8 rooms designed differently. You can gaze at the stars from a hidden moon-viewing deck. I also looked into the Rakuten Mobile signal conditions there.

2026-09-15

Ureshino Onsen Area

I Looked Into Omuraya Ryokan

Founded in 1830, Omuraya Ryokan is the oldest inn at Ureshino Onsen, known for its four types of private baths. I also checked into the Rakuten Mobile signal conditions there.

2026-09-15

Aso Area

I Looked Into Satonoyu Waraku

A hidden retreat in Kurokawa Onsen limited to two adults per room, with every room featuring its own semi-open-air bath. I also looked into the Rakuten Mobile signal conditions there.

2026-09-15

Ureshino Onsen Area

I Looked Into Public Bathhouse Siebold no Yu

A city-run public bathhouse marked by its Taisho-Roman-style Gothic architecture, serving as a landmark in the Ureshino hot spring town. I also looked into the Rakuten Mobile signal conditions there.

2026-09-15

Ureshino Onsen Area

I Looked Into Taishoya

Founded in 1925, Taishoya is a long-established ryokan in Ureshino Onsen with 73 rooms. Its famous large baths, Shiki no Yu and Taki no Yu, are a highlight. I also looked into the Rakuten Mobile signal conditions there.

2026-09-15

Ureshino Onsen Area

I Looked Into Chashin no Yado Warakuen

This inn is known for its open-air tea bath using Ureshino tea, and offers free shuttle service from the station. I also looked into the Rakuten Mobile signal conditions there.

2026-09-15

Ureshino Onsen Area

I Looked Into Wataya Bessou

One of the largest inns in Ureshino Onsen, spread across roughly 20,000 tsubo of grounds. It's proud of its hot springs, said to be one of Japan's three great baths for beautiful skin. I also looked into the Rakuten Mobile signal conditions there.

2026-09-15

Aso Area

I Looked Into ACONCAGUA RESORTS

This is a stunning resort with views of the Ariake Sea and the Five Peaks of Aso, and it apparently offers a glamping dome limited to just one group per day. I also checked out the Rakuten Mobile signal conditions there.

2026-09-14

Aso Area

I Looked Into Aso Farm Land

A wellness theme park known for its distinctive dome-shaped lodging buildings. I also looked into the Rakuten Mobile signal conditions there.

2026-09-14

Aso Area

I Looked Into Aso Resort Grandvrio Hotel

A large resort hotel boasting 180 guest rooms overlooking Aso's outer crater rim and a continuously flowing natural hot spring called Yonezuka Onsen. I also looked into the Rakuten Mobile signal conditions there.

2026-09-14

Beppu Area

I Looked Into Beppu Nogami Honkan

A long-established hot spring inn in central Beppu with three private baths fed by its own natural hot spring source. I also looked into the Rakuten Mobile signal conditions there.

2026-09-14

Aso Area

I Looked Into FRANPING VILLAGE Aso

A glamping facility where you can stay in trailer houses imported directly from America. I also looked into the Rakuten Mobile signal conditions.

2026-09-14

Aso Area

I Looked Into Gekkoju Kurokawa

A hideaway-style inn in Kurokawa Onsen with only 8 detached guest cottages. I also looked into the Rakuten Mobile signal conditions there.

2026-09-14

Beppu Area

I Looked Into Hotel New Tsuruta

A hot spring hotel near Beppu Station with 60 rooms total, plus a large communal bath and sauna. I also checked into the Rakuten Mobile signal conditions there.

2026-09-14

Beppu Area

I Looked Into Iyashi no Sato GI

A small inn in Beppu with only 6 rooms total, where private baths are free to use 24 hours a day. I also looked into the Rakuten Mobile signal conditions there.

2026-09-14

Aso Area

I Looked Into Kosugi Resort Grand Dome

A large glamping tent surrounded by luxurious furniture and bedding. I also checked out the Rakuten Mobile signal conditions there.

2026-09-14

Unzen Area

I Looked Into Minshuku Marutoya

A guesthouse in Unzen Onsen that also accepts day-trip bathers. I also checked the Rakuten Mobile signal conditions there.

2026-09-14

Unzen Area

I Looked Into Minshuku Sekiso

A minshuku (Japanese-style guesthouse) in Unzen Onsen that was founded in 1969, standing by 'Oshidori Pond.' I also looked into the Rakuten Mobile signal conditions there.

2026-09-14

Unzen Area

I Looked Into Minshuku Shindo

A guesthouse located along the road descending from Unzen Onsen town to Obama Onsen. I also looked into the Rakuten Mobile signal conditions there.

2026-09-14

Unzen Area

I Looked Into Minshuku Unzen

A family-run guesthouse in Unzen Onsen known for its communal bath that's open 24 hours a day. I also checked out the Rakuten Mobile signal conditions there.

2026-09-14

Aso Area

I Looked Into Oyado Genga

A Kurokawa Onsen inn with five free-to-use private baths that also welcomes solo travelers. I also checked the Rakuten Mobile signal conditions there.

2026-09-14

Beppu Area

I Looked Into Onyado Nono Beppu

A station-front hotel boasting a top-floor natural hot spring bath overlooking Beppu Bay. I also looked into the Rakuten Mobile signal conditions.

2026-09-14

Aso Area

I Looked Into Ryokan Sanga

A hidden hot spring inn in Kurokawa Onsen where you can enjoy seven different baths fed by two private springs. I also checked into the Rakuten Mobile signal conditions there.

2026-09-14

Aso Area

I Looked Into Senomoto Kogen Hotel

A highland hotel famous for its open-air bath 'Zekkeibi no Yu,' which offers views of the Aso landscape. I also looked into the Rakuten Mobile signal conditions there.

2026-09-14

Unzen Area

I Looked Into Totonoi-dokoro Ebisuya

A stay-only inn in Obama Onsen, renovated from a 70-year-old former ryokan. I also checked out the Rakuten Mobile signal conditions there.

2026-09-14

Aso Area

I Looked Into Yumu Rindo

A one-minute walk from the Kurokawa Onsen bus stop, this wooden Japanese-style inn lets you enjoy four different baths. I also checked out the Rakuten Mobile signal conditions.

2026-09-14

Beppu Area

I Looked Into AMANE RESORT GAHAMA

A hot spring resort hotel standing on Shonin-ga-hama, locally known as "Gahama." I also looked into the Rakuten Mobile signal conditions there.

2026-09-11

Beppu Area

I Looked Into AMANE RESORT SEIKAI (Shiosai no Yado Seikai)

A hot spring resort at Shonin-ga-hama Beach where every room faces the sea and comes with its own open-air bath fed by natural hot spring water. I also checked the Rakuten Mobile signal conditions there.

2026-09-11

Beppu Area

I Looked Into Beppu Onsen Yusai no Yado Bokai

A hot spring inn in the Kitahama area with two private source springs of its own. This is a highly regarded inn that won the jalan OF THE YEAR 2025 award, and I also looked into the Rakuten Mobile signal conditions there.

2026-09-11

Unzen Area

I Looked Into Jisco Hotel Obama Onsen

A reasonably priced hotel that welcomes room-only stays, where you can enjoy an onsen while watching the sunset. I also looked into the Rakuten Mobile signal conditions there.

2026-09-11

Unzen Area

I Looked Into Kaseya CAFE

Kaseya CAFE is a unique spot in Unzen Onsen: a bakery/cafe converted from a long-established inn, complete with a free foot bath and a private bath. I also checked out the Rakuten Mobile signal conditions there.

2026-09-11

Beppu Area

I Looked Into Kijima Kogen Hotel

A highland resort hotel located about a 2-minute walk from Kijima Kogen Park, where you can also enjoy the natural hot spring "Daichi no Yu." I also looked into the Rakuten Mobile signal conditions.

2026-09-11

Unzen Area

I Looked Into Ryokan Wataya

A 12-room Japanese-style inn in Obama Onsen known for its family-run, homey hospitality. It also accepts day-trip bathers, and I checked into the Rakuten Mobile signal conditions there as well.

2026-09-11

Unzen Area

I Looked Into Ryokan Yunoka at Obama Onsen

A small 11-room ryokan known for its self-flowing natural hot spring overlooking Tachibana Bay. I'll introduce the rooms renovated in 2024 and the day-use bathing options, along with a look at Rakuten Mobile signal conditions.

2026-09-11

Unzen Area

I Looked Into Condominium Unzen Yokayu

A hot spring inn in Unzen Onsen where you can enjoy a strongly acidic, 100% source-fed hot spring both as a day-trip bath and as a self-catering stay. I also looked into the Rakuten Mobile signal conditions.

2026-09-11

Unzen Area

I Looked Into Oedo Onsen Monogatari Unzen Toyokan

A large resort hotel in Unzen Onsen known for its popular buffet meals and no-reservation-needed day-use baths. I also looked into the Rakuten Mobile signal conditions there.

2026-09-11

Unzen Area

I Looked Into Yushuku Jouki-ya

A self-catering hot spring inn equipped with 11 steam cookers and a steam sauna. I also checked out the Rakuten Mobile signal conditions there.

2026-09-11

Atami Area

I Looked Into ACAO FOREST

This is a garden and spa resort facility you can reach from Atami Station via a free shuttle bus. I also looked into the Rakuten Mobile signal conditions there.

2026-09-10

Beppu Area

I Looked Into ANA InterContinental Beppu Resort & Spa

A luxury resort hotel with stunning views over Beppu. I also looked into the Rakuten Mobile signal conditions there.

2026-09-10

Atami Area

I Looked Into Atami Fuga

It's a hot spring inn you can reach from Kinomiya Station via a free shuttle. I also checked out the Rakuten Mobile signal conditions there.

2026-09-10

Karuizawa Area

I Looked Into Auberge de Primavera

This is an auberge conveniently located about 8 minutes on foot from Karuizawa Station—great news for someone like me who doesn't drive. I also checked out the Rakuten Mobile signal conditions there.

2026-09-10

Atami Area

I Looked Into Fufu Atami

This is a hot spring inn you can reach via free shuttle from Atami Station or Kinomiya Station. I also checked out the Rakuten Mobile signal conditions there.

2026-09-10

Beppu Area

I Looked Into Grancia Beppu Kannawa

A glamping facility in Kannawa Onsen where every unit comes with its own hot spring. I also looked into the Rakuten Mobile signal conditions.

2026-09-10

Okutama Area

I Looked Into Gyokusuiso

A hot spring inn within walking distance of Okutama Station, making it an easy destination even for me, someone who doesn't drive. I also checked out the Rakuten Mobile signal conditions there.

2026-09-10

Okutama Area

I Looked Into Okutama no Kaze Hatonosu-so

This is a hot spring inn conveniently located about a 5-minute walk from Hatonosu Station, which is great news for me since I don't drive. I also checked out the Rakuten Mobile signal conditions there.

2026-09-10

Karuizawa Area

I Looked Into Hirao Onsen Miharashi no Yu

This is a day-trip hot spring relatively close to Karuizawa Station. I also checked the Rakuten Mobile signal conditions there.

2026-09-10

Karuizawa Area

I Looked Into Hotel Cypress Karuizawa

This hotel is about a 12-minute walk from Karuizawa Station. I also checked out the Rakuten Mobile signal conditions there.

2026-09-10

Beppu Area

I Looked Into Beppu Kannawa Onsen Hotel Sansuikan

A hotel in Kannawa Onsen. I also looked into the Rakuten Mobile signal conditions there.

2026-09-10

Okutama Area

I Looked Into Kamenoi Hotel Ome

This hot spring hotel offers a free shuttle bus from Ome Station, making it easy to access even for someone like me who doesn't drive. I also checked out the Rakuten Mobile signal conditions.

2026-09-10

Beppu Area

I Looked Into Kappo Ryokan Kanna Wa Bettei

A kappo ryokan located in Kannawa Onsen. I also looked into the Rakuten Mobile signal conditions there.

2026-09-10

Karuizawa Area

I Looked Into Hoshino Resorts Karuizawa Hotel Bleston Court

This is a hotel you can reach from Karuizawa Station via a free shuttle bus. I also looked into the Rakuten Mobile signal conditions there.

2026-09-10

Karuizawa Area

I Looked Into Karuizawa Prince Hotel West

This is a hotel you can reach from the south exit of Karuizawa Station via a free pickup bus. I also checked out the Rakuten Mobile signal conditions.

2026-09-10

Okutama Area

I Looked Into Keio Plaza Hotel Hachioji

This hotel is within walking distance of Hachioji Station, which is great news for me since I don't drive. I also checked out the Rakuten Mobile signal conditions there.

2026-09-10

Unzen Area

I Looked Into Ryokan Fujiya

A cozy ryokan with just 8 rooms in Obama Onsen. I also looked into the Rakuten Mobile signal conditions there.

2026-09-10

Unzen Area

I Looked Into Fukutokuya Ryokan

A ryokan in Obama Onsen known for its multiple private baths and fresh seafood dishes. I also checked the Rakuten Mobile signal conditions there.

2026-09-10

Unzen Area

I Looked Into Yushuku Jouke

A hot spring inn that makes use of the steam at Obama Onsen. I also looked into the Rakuten Mobile signal conditions there.

2026-09-10

Unzen Area

I Looked Into Ryokan Kunizaki

A ryokan in Obama Onsen that belongs to the Association for the Protection of Japan's Secluded Hot Springs. I also looked into the Rakuten Mobile signal conditions there.

2026-09-10

Unzen Area

I Looked Into Ryokan Yamadaya

A ryokan in Obama Onsen known for its rooftop open-air bath, 'Iri-hi no Yu,' with views of the sun setting over Tachibana Bay. I also looked into the Rakuten Mobile signal conditions there.

2026-09-10

Beppu Area

I Looked Into Okamotoya Ryokan

A long-established ryokan founded in 1875, known for its milky-white 'Milky Blue Hot Spring' typical of Myoban Onsen. I also looked into the Rakuten Mobile signal conditions there.

2026-09-10

Okutama Area

I Looked Into Okutama Glamping River Terrace

This is a day-trip glamping facility about a 13-minute walk from Kori Station. I also looked into the Rakuten Mobile signal conditions there.

2026-09-10

Beppu Area

I Looked Into Oniyama Hotel

A hotel in Kannawa Onsen known for its hell-steamed kaiseki cuisine made using the hot spring source from Oniyama Jigoku, along with its plentiful private baths. I also looked into the Rakuten Mobile signal conditions there.

2026-09-10

Karuizawa Area

I Looked Into Rising Field Karuizawa

This is an outdoor resort with everything from permanent lodges to free sites for advanced campers. I also looked into Rakuten Mobile signal conditions.

2026-09-10

Okutama Area

I Looked Into Akigawa Valley Seotonoyu

This is a day-trip hot spring facility you can reach by bus from Musashi-Itsukaichi Station. I also checked out the Rakuten Mobile signal conditions there.

2026-09-10

Unzen Area

I Looked Into Yunosato Onsen Public Bathhouse (Dankyu Buro)

The oldest public bathhouse in Unzen Onsen. I also checked into the Rakuten Mobile signal conditions there.

2026-09-10

Atami Area

I Looked Into Atami Onsen Yuyado Ichibanchi

This hot spring inn sits on a hill about a 3-minute walk from Atami Station, and day-trip bathing is also available. I also looked into the Rakuten Mobile signal conditions there.

2026-09-10

Unzen Area

I Looked Into Azumaen

A Japanese-style resort inn where every room overlooks Oshidori Pond, boasting its own private hot spring source with a continuous flow. I also checked out the Rakuten Mobile signal conditions.

2026-09-09

Beppu Area

I Looked Into Kamenoi Hotel Beppu

A hotel just a 5-minute walk from JR Beppu Station, known for its night views and train views from the upper floors. You can also enjoy jigoku-mushi (hell-steamed) cuisine on-site. I also checked out the Rakuten Mobile signal conditions.

2026-09-09

Beppu Area

I Looked Into Futabaso in Kannawa Onsen

An old-fashioned self-catering inn with rows of connected 4.5- to 6-mat rooms. Its signature features are a rock bath fed by its own hot spring source and jigoku-mushi steam cooking using a 'jigoku-gama' (hell cooker). I also looked into the Rakuten Mobile signal conditions there.

2026-09-09

Beppu Area

I Looked Into Hamada Onsen

This is a Beppu city-run hot spring just steps from JR Kamegawa Station, offering chloride spring water along with well-equipped accessible facilities. I also looked into the Rakuten Mobile signal conditions there.

2026-09-09

Beppu Area

I Looked Into Hotel Seawave Beppu

A business hotel just a 1-minute walk from the East Exit of Beppu Station, offering a skin-beautifying hot spring fed straight from its own natural source. I also looked into the Rakuten Mobile signal conditions there.

2026-09-09

Beppu Area

I Looked Into Jigoku Mushi Kobo Kannawa

This is a facility where you can bring your own ingredients and cook them using steam at around 100 degrees Celsius — the famous "hell steaming" experience of Beppu Onsen. I also checked out the Rakuten Mobile signal conditions there.

2026-09-09

Unzen Area

I Looked Into Juraku

An inn at Obama Onsen known for its all-inclusive-style first-floor lounge, where you can enjoy unlimited alcohol and light snacks while taking in stunning views of the sky and sea. I also looked into the Rakuten Mobile signal conditions.

2026-09-09

Beppu Area

I Looked Into Oedo Onsen Monogatari Beppu Seifu

A hot spring hotel overlooking Beppu Bay, boasting an open-air observation bath with an unobstructed ocean view. I also looked into the Rakuten Mobile signal conditions there.

2026-09-09

Unzen Area

I Looked Into Oedo Onsen Monogatari Unzen Toyokan

A resort hotel known for its no-reservation-needed day-trip bathing and popular buffet meals. I also checked out the Rakuten Mobile signal conditions there.

2026-09-09

Beppu Area

I Looked Into RECAMP Beppu Shikoko

A municipally run campsite in Beppu on the shore of Lake Shikoko, surrounded by mountains on all sides. It has both partitioned and free sites, and you can even enjoy going around the lake by pedal boat. I also looked into Rakuten Mobile signal conditions there.

2026-09-09

Unzen Area

I Looked Into Ryotei Hansuiro

This inn has just 14 buildings spread across roughly 5,000 tsubo of grounds, with every room a detached, sukiya-style cottage. Its kaiseki cuisine, recognized by the Michelin Guide, is a signature feature. I also looked into the Rakuten Mobile signal conditions here.

2026-09-09

Unzen Area

I Looked Into Seiunso

This hotel boasts its own private hot spring source with an impressive daily flow of 440 tons, and it also welcomes same-day visitors for day-trip bathing without any advance reservation needed. I also checked out the Rakuten Mobile signal conditions there.

2026-09-09

Beppu Area

I Looked Into Super Hotel Beppu Ekimae Kannawa no Yu

A business hotel right by the station that boasts a natural hot spring called Kannawa no Yu and a free breakfast buffet. I also checked out the Rakuten Mobile signal conditions there.

2026-09-09

Unzen Area

I Looked Into Unzen Iwaki Ryokan

This is the only ryokan in Unzen Onsen with its own hot spring source on the premises. It has apparently earned perfect scores across all categories in a hot spring quality inspection, thanks to its 100% natural spring water on tap. I also checked out the Rakuten Mobile signal conditions.

2026-09-09

Unzen Area

I Looked Into Unzen Kyushu Hotel

A historic resort hotel established in 1917, where every single room comes with its own hot spring bath, either semi-open-air or fully open-air. I also checked out the Rakuten Mobile signal conditions there.

2026-09-09

Unzen Area

I Looked Into Unzen Miyazaki Ryokan

This ryokan boasts continuously-flowing, source-fed hot spring baths called Kirin no Yu, piped in from Daikyokan Jigoku, with the large bath, open-air bath, and private baths all being genuine source-fed hot springs. I also checked into the Rakuten Mobile signal conditions.

2026-09-09

Unzen Area

I Looked Into Unzen Sky Hotel

This hotel takes pride in its two large baths fed directly with natural hot spring water piped straight from Unzen Hell, and it also offers day-use bathing plans that include meals. I also looked into the Rakuten Mobile signal conditions there.

2026-09-09

Unzen Area

I Looked Into Yuyado Unzen Shinyu

This is the only ryokan in Unzen with four of its own hot spring sources on its grounds. You can hop between four bathing facilities, each with a different water quality. I also checked out the Rakuten Mobile signal conditions there.

2026-09-09

Beppu Area

I Looked Into Beppu Kaihin Sayu

A Sand SPA inside the complex resort "TKP SHONIN PARK," making use of a natural sand bath dating back to 1532. You can enjoy sand bathing while looking out over Beppu Bay. I also checked the Rakuten Mobile signal conditions there.

2026-09-08

Beppu Area

I Looked Into Beppu Onsen Hoyo Land

A historic hot spring resort facility even mentioned in the Bungo Fudoki, famous for its mud bath at Konya Jigoku. Both day-trip visits and no-meal overnight stays are available. I also checked out Rakuten Mobile's signal conditions there.

2026-09-08

Unzen Area

I Looked Into Hotel Orange Bay

A hotel that calls itself "the closest hotel to the sea in Obama," with ocean views in every room. The open-air baths on the balconies and the private hot spring baths over the water are big draws. I also checked into the Rakuten Mobile signal conditions there.

2026-09-08

Unzen Area

I Looked Into Hotto Futto 105

Named after its 105-degree source spring temperature, this is apparently Japan's longest flowing foot bath at 105 meters. You can enjoy it for free while watching the sunset sink into Tachibana Bay. I also looked into the Rakuten Mobile signal conditions there.

2026-09-08

Beppu Area

I Looked Into Hyotan Onsen

A famous day-use hot spring in Kannawa Onsen that achieves a fully non-diluted natural hot spring flow using its unique bamboo cooling system called Yuuchiku. It also offers sand baths and steam baths. I also looked into the Rakuten Mobile signal conditions there.

2026-09-08

Beppu Area

I Looked Into Hoshino Resorts KAI Beppu

A Hoshino Resorts hot spring ryokan featuring an indoor bath decorated with Usuki-yaki tile walls and kaiseki cuisine made with seafood from the Bungo Channel. I also checked the Rakuten Mobile signal conditions.

2026-09-08

Unzen Area

I Looked Into KAI Unzen

A Hoshino Resorts hot spring inn known for its cloudy, strongly acidic waters drawn from Unzen Jigoku (Unzen Hell), and its flying fish broth shabu-shabu. I also looked into the Rakuten Mobile signal conditions.

2026-09-08

Beppu Area

I Looked Into Kannawa Mushiyu

A natural rock-cave steam bath associated with the monk Ippen. You're wrapped in hot spring steam while lying on a floor covered with the medicinal herb sekisho. I also looked into Rakuten Mobile signal conditions there.

2026-09-08

Unzen Area

I Looked Into Kojigoku Onsenkan

This historic public bathhouse dates back to 1731 and is said to have been visited by Yoshida Shoin. Its pride is the milky, softly cloudy hot spring water, served straight from the source with no recirculation. I also checked the Rakuten Mobile signal conditions there.

2026-09-08

Beppu Area

I Looked Into Suginoi Hotel

A large resort hotel known for its terraced open-air bath 'Tanayu,' offering panoramic views of Beppu Bay. I also looked into Rakuten Mobile signal conditions there.

2026-09-08

Beppu Area

I Looked Into Takegawara Onsen

Founded in 1879, this Beppu city-run public bathhouse is known for its distinctive karahafu-style gabled roof. You can also enjoy its famous sand bath. I also checked out the Rakuten Mobile signal conditions there.

2026-09-08

Unzen Area

I Looked Into Tsutaya Ryokan

A ryokan facing Tachibana Bay with ocean views from every room. It has 5 private open-air baths on the rooftop, offering a stunning view overlooking Japan's longest foot bath. I also looked into the Rakuten Mobile signal conditions.

2026-09-08

Unzen Area

I Looked Into Unzen Fukudaya

A long-established ryokan founded in 1968 that has welcomed over 1.1 million guests. You can visit for the day using the private baths, and there's a panoramic infinity open-air bath called Kunpu no Yu. I also looked into the Rakuten Mobile signal conditions.

2026-09-08

Unzen Area

I Looked Into Unzen Kanko Hotel

Founded in 1935, this classic hotel is a symbol of Unzen Onsen. The sulfur bath with its domed ceiling and stained glass is truly striking. I also looked into the Rakuten Mobile signal conditions there.

2026-09-08

Unzen Area

I Looked Into Unzen Shinyu Onsenkan

A time-honored communal bathhouse located in the Shinyu district of Unzen Onsen. You can enjoy unfiltered, source-fed sulfur spring water with the casual feel of a neighborhood bathhouse. I also looked into the Rakuten Mobile signal conditions there.

2026-09-08

Beppu Area

I Looked Into Yutopia Hamawaki

A municipal hot spring wellness facility modeled after European kur houses, designed to promote health. It's conveniently located right in front of JR Higashi-Beppu Station. I also looked into the Rakuten Mobile signal conditions there.

2026-09-08

Nasu Highlands Area

I Looked Into Nasu Kogen Acalpa

A car campsite limited to solo campers, pairs, or single families, valuing a quiet experience. I checked out the Rakuten Mobile signal conditions.

2026-09-07

Nasu Highlands Area

I Looked Into Gensen no Yu Higashiya

A ryokan with its own hot spring source producing 225 liters per minute, and a two-tiered outdoor bath where the upper level offers views of Shiobara. I also checked the Rakuten Mobile signal conditions.

2026-09-07

Nasu Highlands Area

I Looked Into Itamuro Onsen Daikokuya

A ryokan in Itamuro Onsen known for its open-air bath where you can listen to the murmur of the Naka River. I checked out the Rakuten Mobile signal conditions.

2026-09-07

Nasu Highlands Area

I Looked Into Shiobara Onsen Ryokan Kamiaizuya

A purely Japanese-style ryokan standing along the Hoki River, featuring a large communal bath fed by its own hot spring source, an open-air bath, and rooms with private saunas. I also checked the Rakuten Mobile signal conditions.

2026-09-07

Nasu Highlands Area

I Looked Into Koun-so

A hot spring inn known for its own spring source rich in metasilicic acid, a beauty-skin component, and private baths available almost around the clock. I also checked out the Rakuten Mobile signal conditions.

2026-09-07

Nasu Highlands Area

I Looked Into Matsukawaya Nasu Kogen Hotel

A day-use-only hot spring facility drawing from the Shika-no-yu source, with a history of over 1,380 years, and the Oku-no-sawa source. I checked the Rakuten Mobile signal conditions.

2026-09-07

Nasu Highlands Area

I Looked Into Mikaeri no Sato Saika no Yu

A day-use hot spring facility known for its open-air bath with views of the mountains of Shiobara from a hilltop. I also checked the Rakuten Mobile signal conditions.

2026-09-07

Nasu Highlands Area

I Looked Into Oide-kan

A member inn of the 'Association to Protect Japan's Secluded Hot Springs,' offering hot spring hopping across all 8 baths, every one filled with 100% source-fed natural hot spring water. I also looked into Rakuten Mobile signal conditions there.

2026-09-07

Nasu Highlands Area

I Looked Into Oku-Shiobara Kogen Hotel

A highland hotel proud of its 100% natural-source, milky-white flowing hot spring baths, also open to day-trip bathers. I checked out the Rakuten Mobile signal conditions there.

2026-09-07

Nasu Highlands Area

I Looked Into ONSEN RYOKAN Sanki

A hot spring ryokan with 8 rooms in total, where you can enjoy naturally flowing hot spring water straight from the source in Itamuro Onsen. I also looked into the Rakuten Mobile signal conditions.

2026-09-07

Nasu Highlands Area

I Looked Into Senbonmatsu Onsen

A day-use hot spring facility with alkaline simple hot spring water located inside Senbonmatsu Farm. I also checked the Rakuten Mobile signal conditions.

2026-09-07

Nasu Highlands Area

I Looked Into Shiobara Akatsuki no Yu

A day-use hot spring facility where you can enjoy a pH 9.2 alkaline simple hot spring and a bathing pool. I checked the Rakuten Mobile signal conditions there.

2026-09-07

Nasu Highlands Area

I Looked Into TAOYA Nasu-Shiobara

A hot spring hotel in the Shiobara Onsen area, operated by the Oedo Onsen Monogatari group. I checked the Rakuten Mobile signal conditions.

2026-09-07

Nasu Highlands Area

I Looked Into Treehouse Village Odagiri Garden

A campground in the Nasu Highlands where you can stay in treehouses the owner designed and built by hand. I looked into the Rakuten Mobile signal conditions.

2026-09-07

Chichibu & Nagatoro Area

I Looked Into Yamaai no Yado Yashiki

A 4-room inn with the charm of an old traditional house overlooking a garden pond, featuring a fully private indoor bath. I checked the Rakuten Mobile signal conditions there.

2026-09-07

Nasu Highlands Area

I Looked Into Yuyado Kikuya

A small inn in Itamuro Onsen with just 3 rooms. I checked out the Rakuten Mobile signal conditions.

2026-09-07

Nasu Highlands Area

I Looked Into Hotel Sunvalley Nasu

Hotel Sunvalley Nasu is a large resort hotel in Nasu Onsen. It's known for its three types of hot spring water and a pool. I also checked the Rakuten Mobile signal conditions there.

2026-09-06

Chichibu & Nagatoro Area

I Looked Into Mission Hills Hotel & Cottage

A hotel and cottage facility attached to Mission Hills Country Club, a golf course in Minano, Chichibu. I also checked the Rakuten Mobile signal conditions.

2026-09-06

Nasu Highlands Area

I Looked Into Moose Family Camp Resort

Moose Family Camp Resort is a camping resort located in the Nasu area. I also checked the Rakuten Mobile signal conditions there.

2026-09-06

Nasu Highlands Area

I Looked Into Nasu Itamuro Family Auto Camp Ground Hapisupo

Hapisupo is a family auto camp ground near Nasushiobara and Itamuro Onsen. I also checked the Rakuten Mobile signal conditions there.

2026-09-06

Nasu Highlands Area

I Looked Into Nasunogahara Park Auto Campsite

Nasunogahara Park Auto Campsite is an auto campsite located inside a prefectural park in Nasushiobara. I also checked the Rakuten Mobile signal conditions there.

2026-09-06

Nasu Highlands Area

I Looked Into Nasushiobara Yumiya Campsite Piccolo

Piccolo is a campsite located in the Yumiya hot spring area of Nasushiobara. I also checked the Rakuten Mobile signal conditions.

2026-09-06

Chichibu & Nagatoro Area

I Looked Into RV Park Smart Nagatoro

An RV park in Nagatoro themed around "the River and Steam Locomotive Village." A facility for car camping and RV users. I also checked Rakuten Mobile signal conditions.

2026-09-06

Nasu Highlands Area

I Looked Into Ryu no Kuni Auto Campsite

Ryu no Kuni Auto Campsite is an auto campsite located in Nasushiobara. It also offers a gear-free plan featuring game meat BBQ. I also checked the Rakuten Mobile signal conditions there.

2026-09-06

Nasu Highlands Area

I Looked Into Shiobara Onsen Activity Club Campground

Shiobara Onsen Activity Club is a campground in the Nasu Shiobara / Shiobara Onsen area. I also checked out the Rakuten Mobile signal conditions there.

2026-09-06

Chichibu & Nagatoro Area

I Looked Into Yamaai no Sato Campsite

Yamaai no Sato Campsite sits along the Yoshida River in Chichibu, where you can play in the river right from the campsite grounds. I also checked the Rakuten Mobile signal conditions there.

2026-09-06

Chichibu & Nagatoro Area

I Looked Into Yoshida Genki Mura

Yoshida Genki Mura is a cottage and day-camp facility in Chichibu that also has a day-use bathing facility on site. I also checked the Rakuten Mobile signal conditions there.

2026-09-06

Chichibu & Nagatoro Area

I Looked Into Yuyukan, the Hot Spring at Michi-no-Eki Otaki Onsen

Yuyukan is a day-trip hot spring attached to a roadside station (michi-no-eki) in the Otaki area of Chichibu. I also checked the Rakuten Mobile signal conditions there.

2026-09-06

Chichibu & Nagatoro Area

I Looked Into Akaya Onsen Irori no Yado Kojikaso

A hot spring inn in Chichibu where you can gather around an irori hearth. I also checked the Rakuten Mobile signal conditions.

2026-09-05

Chichibu & Nagatoro Area

I Looked Into Chichibu Tomoegawa Auto Campsite

An auto campsite in Chichibu with a convenient 24-hour coin-operated hot water shower. I also checked the Rakuten Mobile signal conditions.

2026-09-05

Chichibu & Nagatoro Area

I Looked Into Dainichi Kogen Campground

A highland campground in Urayama, Chichibu. I also checked the Rakuten Mobile signal conditions.

2026-09-05

Chichibu & Nagatoro Area

I Looked Into Hammer's Camp

This is a renewed campground that used to be called Yakushi Park Campground, and you can also use the nearby day-trip hot spring facility at the roadside station in the Ryokami area called Yakushi no Yu. I also checked the Rakuten Mobile signal conditions.

2026-09-05

Chichibu & Nagatoro Area

I Looked Into Hashidategawa Campground

A campground in Chichibu located at the confluence of the Hashidate River and the Urayama River. I also checked the Rakuten Mobile signal conditions.

2026-09-05

Chichibu & Nagatoro Area

I Looked Into Hataraku Co-living Minano subako

A coworking-equipped lodge known for its birdhouse-style maisonette cabins called 'Subako Rooms.' It also offers free shuttle service from Nagatoro Station and Kami-Nagatoro Station. I also checked the Rakuten Mobile signal conditions.

2026-09-05

Chichibu & Nagatoro Area

I Looked Into kieto Chichibu

A cottage-style property with 6 rooms total, including dog-friendly rooms. It also features a barrel sauna and outdoor pool. I also checked the Rakuten Mobile signal conditions.

2026-09-05

Chichibu & Nagatoro Area

I Looked Into Kurochan Free Campsite

A laid-back campsite with a hot-water shower in the management building. I also checked the Rakuten Mobile signal conditions.

2026-09-05

Chichibu & Nagatoro Area

I Looked Into Maruyama Kosen Ryokan

A mineral spring inn in Yokoze that also offers a day-use bath called Kaetsu no Yu. I also checked the Rakuten Mobile signal conditions.

2026-09-05

Chichibu & Nagatoro Area

I Looked Into Nouka Yashiki Miyamoto-ke

A renovated old farmhouse inn in Ogano. I also checked the Rakuten Mobile signal conditions.

2026-09-05

Chichibu & Nagatoro Area

I Looked Into Nakatsugawa-mura Campsite

A campsite where you can use the free on-site 'Nakatsugawa Onsen' bathing facility. I also checked Rakuten Mobile signal conditions.

2026-09-05

Chichibu & Nagatoro Area

I Looked Into Ryokami Sanroku Campground

A campground at the base of Mt. Ryokami with 10 showers in its bathhouse building. I also checked the Rakuten Mobile signal conditions.

2026-09-05

Chichibu & Nagatoro Area

I Looked Into Chichibu Ogano Onsen Ryokan Ryozanpaku

Ryozanpaku is a hot spring ryokan in Ogano. I also checked the Rakuten Mobile signal conditions there.

2026-09-05

Chichibu & Nagatoro Area

I Looked Into Shibahara Onsen Hotel Miyama

An inn at Shibahara Onsen known for its open-air bath along the Yokoze River and its own private sulfur spring source. I also checked the Rakuten Mobile signal conditions there.

2026-09-05

Chichibu & Nagatoro Area

I Looked Into Suzaki Ryokan at Ogano Onsen

A long-established hot spring inn that's been running for 100 years in Ogano, Chichibu. The Rakuten Mobile signal was rated AA.

2026-09-05

Chichibu & Nagatoro Area

I Looked Into Tochimoto Campsite 'Mori to Sora'

All 7 wood deck sites come equipped with power outlets and BBQ grills. You can also use the private reservation-only scenic bath 'Yuya Tsuki,' about a 5-minute walk away. I also checked the Rakuten Mobile signal conditions.

2026-09-05

Chichibu & Nagatoro Area

I Looked Into Yokotei

Yokotei is a hot spring inn located in Nagatoro. I also checked the Rakuten Mobile signal conditions there.

2026-09-05

Aso Area

I Looked Into Aso Plaza Hotel

A long-established hotel in Uchinomaki Onsen that's been around since it opened. It has a large public bath open to day-trip visitors too, and I checked the Rakuten Mobile signal conditions.

2026-09-04

Aso Area

I Looked Into Foresta Aso Kurumaki

A glamping resort where every room comes with its own hot spring bath. I looked into the Rakuten Mobile signal conditions at this facility, which also offers private-use saunas.

2026-09-04

Aso Area

I Looked Into Gogaku Hotel

A business hotel proud of its hot spring that has been flowing straight from the source for over 90 years. I checked out the Rakuten Mobile signal conditions there.

2026-09-04

Aso Area

I Looked Into Ikoi Ryokan

A ryokan in Kurokawa Onsen where you can enjoy a bath-hopping experience with 13 different types of baths right on the premises. I also checked the Rakuten Mobile signal conditions there.

2026-09-04

Aso Area

I Looked Into Kamenoi Hotel Aso Park Resort

This hotel changed its name and got renovated in 2025. It's also a facility where you can use the hot springs for day visits, so I looked into the Rakuten Mobile signal conditions there.

2026-09-04

Aso Area

I Looked Into Kurokawa-So

A quiet inn in Kurokawa Onsen with fully private dining rooms and three free private baths. I looked into the Rakuten Mobile signal conditions there.

2026-09-04

Aso Area

I Looked Into Kyukamura Minami-Aso

A resort hotel at a national health resort in Takamori Town. I checked the Rakuten Mobile signal conditions there.

2026-09-04

Aso Area

I Looked Into Minami-Aso Blue Bee Garden

A glamping facility with dome tents and sauna-equipped lodges. I looked into the Rakuten Mobile signal conditions there.

2026-09-04

Aso Area

I Looked Into the Relaxation and Cuisine Inn: Mori no Rengakan

A calm, quiet ryokan located in Takamori Town. I checked out the Rakuten Mobile signal conditions there.

2026-09-04

Aso Area

I Looked Into Nanjoen Ryokan

A ryokan in Kurokawa Onsen known for its popular online and phone reservations. I checked out the Rakuten Mobile signal conditions there.

2026-09-04

Aso Area

I Looked Into Ryokan Okunoyu

A retreat wrapped in the quiet of the mountains at Kurokawa Onsen. I checked out the Rakuten Mobile signal conditions there.

2026-09-04

Aso Area

I Looked Into Historic Inn Okyakuya

Founded in 1722, this is one of the oldest inns in Kurokawa Onsen. I checked the Rakuten Mobile signal conditions.

2026-09-04

Aso Area

I Looked Into Oyado Daikonya

A ryokan located in Takamori Town. I looked into the Rakuten Mobile signal conditions there.

2026-09-04

Aso Area

I Looked Into Ryokuseien Campsite

An auto-site campground in Takamori, Kumamoto. I checked out the Rakuten Mobile signal conditions there.

2026-09-04

Aso Area

I Looked Into Shinmeikan

A small ryokan in the Kurokawa Onsen area known for its "cave bath." I looked into the Rakuten Mobile signal conditions there.

2026-09-04

Aso Area

I Looked Into Yamabiko Ryokan

A ryokan in Kurokawa Onsen known for its large open-air bath called 'Sennin-buro.' I checked the Rakuten Mobile signal conditions there.

2026-09-04

Aso Area

I Looked Into Yamamizuki

A standalone inn representing Kurokawa Onsen, nestled along a mountain stream. I looked into the Rakuten Mobile signal conditions there.

2026-09-04

Aso Area

I Looked Into Ryokan Yumotoso

A long-established Kurokawa Onsen inn with a retro atmosphere, standing along the Tanoharu River. I looked into the Rakuten Mobile signal conditions there.

2026-09-04

Chichibu & Nagatoro Area

I Looked Into CHARM-CAMP

It's a campsite in Nagatoro that only accepts one group per day, with reception handled by a local tea shop, where you can quietly enjoy the outdoors. The Rakuten Mobile signal condition came back as undetermined (a maintenance notice was shown).

2026-09-03

Chichibu & Nagatoro Area

I Looked Into Minna no Ouchi Camp Chichibunchi

This campground is the renamed version of the former Urayamaguchi Camp Site, and the cottages come with power outlets. Rakuten Mobile's signal rating came back as a solid AA.

2026-09-03

Hakone Area

I Looked Into Hakone Parks Yoshino

This is a Hakone inn with two large baths: 'Katsura,' overlooking Mt. Yusaka, and 'Kinu,' a scenic bath with views of the mountain stream. Rakuten Mobile's signal rating came out to a C.

2026-09-03

Hakone Area

I Looked Into Manjuya Ryokan at Hakone Sengokuhara Onsen

This is a Sengokuhara hot spring inn with all-Japanese-style rooms, proud of its cloudy natural hot spring fed 100% by Owakudani source water on a flow-through basis. Rakuten Mobile signal conditions came back as a C rating.

2026-09-03

Chichibu & Nagatoro Area

I Looked Into Shibahara Onsen Kayanoie

This hot spring inn, a member of the Association for the Preservation of Japan's Hidden Hot Springs, boasts open-air and indoor baths made of kaya (Japanese nutmeg) wood. Rakuten Mobile signal conditions came back as a good AAA rating.

2026-09-03

Nasu Highlands Area

I Looked Into Kita Onsen Ryokan

This is a long-established inn in Nasu known for its simple hot spring baths. As for Rakuten Mobile signal, the result was undetermined (maintenance notice shown).

2026-09-03

Nasu Highlands Area

I Looked Into Kokko Land Nasu F.C.G

This is a campsite with cooking areas split into 3 locations and 36 sinks in total, making it friendly even for indoor-loving beginners. Rakuten Mobile signal conditions couldn't be determined (a maintenance display appeared instead).

2026-09-03

Hakone Area

I Looked Into Laforet Hakone Gora Yunosumika

This is a Hakone Gora property run by Laforet Hotels & Resorts, with 66 rooms total across the Main Building and the Aya Building. Rakuten Mobile's signal condition was rated C.

2026-09-03

Kawaguchiko & Fuji Five Lakes Area

I Looked Into Labista Fuji Kawaguchiko

Of the 83 rooms total, many come with a 'view bath' overlooking Mt. Fuji, at this hotel run by Kyoritsu Resort. Rakuten Mobile's signal condition came back as a C rating.

2026-09-03

Chichibu & Nagatoro Area

I Looked Into Retreat Field Mahora Inahoyama

This campground is fully equipped with a multipurpose restroom, making it a place families can feel comfortable at. Rakuten Mobile signal conditions were undeterminable (maintenance notice).

2026-09-03

Nasu Highlands Area

I Looked Into Maple Nasu Kogen Camp Ground

This campground has multiple kitchen buildings with well-equipped sinks that include hot water. As for Rakuten Mobile signal conditions, the result was undetermined (the tool showed a maintenance notice).

2026-09-03

Nasu Highlands Area

I Looked Into NAGOMICAMP Nasu

This facility mainly features Japanese-modern glamping limited to 4 groups per day, with a no-gear-needed camping option also available on-site. Rakuten Mobile signal conditions came back as a C rating.

2026-09-03

Nasu Highlands Area

I Looked Into Nasu Onsen Daimaru Onsen Ryokan

This historic hot spring inn boasts a "beautiful skin bath" made by blending five different hot spring sources, and its water was even piped to the Nasu Imperial Villa in the past. As for Rakuten Mobile signal conditions, the check came back unavailable (showing a maintenance notice).

2026-09-03

Chichibu & Nagatoro Area

I Looked Into Natural Farm City Noen Hotel

This hotel lets you take in the Okuchichibu mountain range from the observation deck of a large public bath called Shikisai no Yu, an artificial hot spring made using natural minerals. Rakuten Mobile's signal condition here was rated C.

2026-09-03

Chichibu & Nagatoro Area

I Looked Into Okuchichibu Ryokami Camping Ground

This campground has flush toilets in two spots on the grounds, and its simple setup style stands out since there are no powered sites. The Rakuten Mobile signal came back with a C rating.

2026-09-03

Kawaguchiko & Fuji Five Lakes Area

I Looked Into Royal Hotel Kawaguchiko

This is a hotel on the shore of Lake Kawaguchi where you can choose from multiple room types, from Japanese-style rooms to modern Japanese-Western rooms. Rakuten Mobile signal conditions came back as a C rating.

2026-09-03

Hakone Area

I Looked Into Ryugu-den Honkan, a Day-Trip Hot Spring with Amazing Views

This is a day-trip hot spring facility with a women's bath called "Kocho," featuring an open-air bath overlooking Lake Ashi and Mt. Fuji, and a men's bath called "Yumedono," equipped with a Finnish sauna. The Rakuten Mobile signal rating came out as C.

2026-09-03

Hakone Area

I Looked Into Shinanoki Ichinoyu

This is an Ichinoyu group inn in Sengokuhara where you can enjoy two different hot spring sources - Owakudani Onsen and Ohiradai Onsen. Rakuten Mobile's signal condition came back as a C rating.

2026-09-03

Chichibu & Nagatoro Area

I Looked Into Okuchichibu Auto Campsite Suzukaen

This is an auto campsite that also has sites with AC power, and the adjacent restaurant lets you enjoy stone-grilled dishes. Rakuten Mobile signal conditions came back as a C rating.

2026-09-03

Chichibu & Nagatoro Area

I Looked Into Tsuchiuchi Campground

This is a campground where all the on-site restrooms are clean flush toilets. The Rakuten Mobile signal condition was rated C.

2026-09-03

Nasu Highlands Area

I Looked Into Yamano Yado Shimofujiya

This is a ryokan in Shiobara Onsen where you can choose from multiple room types, including modern-style rooms. The Rakuten Mobile signal condition was rated C.

2026-09-03

Chichibu & Nagatoro Area

I Looked Into Bukou Campground

A tent-only campground next to Bukou Onsen, with forest and riverside sites. I looked into the discounted day-use hot spring facilities and Rakuten Mobile signal conditions.

2026-09-02

Hakodate Area

I Looked Into HOTEL&SPA Century Marina Hakodate

A hotel just 5 minutes on foot from Hakodate Station, with a top-floor infinity spa offering panoramic views of Mt. Hakodate and the bay area. Rakuten Mobile signal conditions came back with an AAA rating, so it looks solid.

2026-09-02

Hakodate Area

I Looked Into Chikuyo Shinyotei

Founded in 1949, this long-established Japanese-style ryokan features a dry landscape garden and two types of hot springs, and also offers day-trip bathing. Rakuten Mobile's signal condition was rated C.

2026-09-02

Hakodate Area

I Looked Into HAKODATE Kaikyo no Kaze

A 56-room hotel operated by the Noguchi Kanko Group, featuring three restaurants including a seafood buffet and Western-style and sushi kaiseki dining. Rakuten Mobile signal conditions came back with an AAA rating - solid.

2026-09-02

Hakodate Area

I Looked Into Hakodate International Hotel

A hotel standing in the bay area facing Hakodate Port, where you can also enjoy the natural hot spring bath with a view, Shiomi no Yu. Rakuten Mobile's signal came back as a good AAA rating.

2026-09-02

Hakodate Area

I Looked Into Hakodate Nogi Onsen Nagomi

A day-use hot spring with 7 types of baths and 2 types of saunas (mist and high-heat), featuring naturally sourced, unfiltered spring water. Rakuten Mobile signal conditions came back as a C rating.

2026-09-02

Hakodate Area

I Looked Into Hakodate Onuma Prince Hotel

Hakodate Onuma Prince Hotel features Nishi-Onuma Onsen's "Mori no Yu," a hot spring fed by 270 liters per minute from its own source. I wasn't able to check the Rakuten Mobile signal conditions this time.

2026-09-02

Hakone Area

I Looked Into Hakone Yunohana Prince Hotel

This hotel is known for its milky-white cloudy hot spring water called the 'Skin-Beautifying Bath,' said to be located at the highest elevation among the Seventeen Hot Springs of Hakone, and it also offers day-trip bathing. I checked the Rakuten Mobile signal conditions there.

2026-09-02

Hakodate Area

I Looked Into Hanabishi Hotel

A long-established hotel founded in 1948, said to have the first automatic loyly sauna in Yunokawa Onsen. Rakuten Mobile's signal condition was rated C.

2026-09-02

Chichibu & Nagatoro Area

I looked into Chichibu Nagatoro Onsen's Adults-Only Hidden Healing Retreat, Hanayu Bettei

An adults-only, all-inclusive inn where all 13 rooms offer Arakawa River views and private open-air baths. I also looked into the facilities, including a dry sauna and stone bath, as well as Rakuten Mobile signal conditions.

2026-09-02

Hakodate Area

I Looked Into Umi to Akari HUIT RESORT Hakodate Yunokawa

A resort hotel at Yunokawa Onsen where the open-air bath blends into the sea and sky, and the rooftop "moon-viewing sake" lets you enjoy local sake as a highlight. As for Rakuten Mobile signal conditions, the official area-check tool showed a maintenance notice at the time I checked, so I couldn't confirm the rating.

2026-09-02

Hakodate Area

I Looked Into Higashi-Onuma Campground

Higashi-Onuma Campground is known for its free open site that can hold up to 100 tents. This time, I wasn't able to check the Rakuten Mobile signal conditions.

2026-09-02

Hakodate Area

I Looked Into Hotel Global View Hakodate

A hotel standing at the gateway to Hakodate, featuring separate large public baths, open-air baths, saunas, and jacuzzis for men and women. Rakuten Mobile signal conditions came back as a C rating.

2026-09-02

Hakone Area

I Looked Into Hotel Indigo Hakone Gora

This hotel has natural hot spring baths in every room, plus a swimsuit-required thermal spring you can enjoy. I also looked into Rakuten Mobile signal conditions there.

2026-09-02

Hakodate Area

I Looked Into JR Inn Hakodate

A hotel right next to JR Hakodate Station, with a big bath that offers a train view so you can watch trains while soaking. Rakuten Mobile's signal condition was rated AAA - good.

2026-09-02

Nasu Highlands Area

I Looked Into Kanechan Onsen

I looked into Kanechan Onsen, a day-use hot spring where you can enjoy a 74-degree Celsius source that flows straight up from 1,400 meters underground, served in a continuous-flow style. I also checked the Rakuten Mobile signal conditions there.

2026-09-02

Kawaguchiko & Fuji Five Lakes Area

I Looked Into Yumedono, a Kawaguchiko Onsenji Inn with Private Open-Air Baths

I looked into Kawaguchiko Onsenji Yumedono, an inn built entirely of zelkova wood modeled after Nijo Castle in Kyoto, where every room comes with its own open-air bath. I also checked the Rakuten Mobile signal conditions.

2026-09-02

Hakodate Area

I Looked Into Kijihiki Kogen Camp Site

A stunning campsite where you can see Mt. Hakodate, the Tsugaru Strait, Mt. Komagatake, and Lake Onuma from near the summit of Mt. Kijihiki. Rakuten Mobile signal conditions were good, rated AA.

2026-09-02

Hakodate Area

I Looked Into Lavista Hakodate Bay

A hotel with retro-modern interiors inspired by the Taisho Romance era, where you can enjoy views of Hakodate's night scenery from the open-air bath on the top floor. Rakuten Mobile signal conditions came back as an AAA rating, which was good.

2026-09-02

Hakodate Area

I Looked Into Livemax Resort Hakodate Greenpia Onuma

Livemax Resort Hakodate Greenpia Onuma offers a wide range of accommodation styles, from hotel rooms to glamping and camping. I wasn't able to check Rakuten Mobile signal conditions this time.

2026-09-02

Chichibu & Nagatoro Area

I Looked Into Chichibu Onsen Manganno-yu

A day-trip hot spring facility known for its stunning outdoor bath overlooking Mangan Falls in the Oku-Nagatoro Gorge. I looked into the simple sulfur spring facilities, which are even drinkable, as well as the Rakuten Mobile signal conditions.

2026-09-02

Hakone Area

I Looked Into Mervelle Hakone Gora

This is an all-inclusive hotel with 55 rooms total, featuring a large communal bath, jacuzzi, and sauna. I looked into the Rakuten Mobile signal conditions there.

2026-09-02

Chichibu & Nagatoro Area

I Looked Into Chichibu Nishiyatsu Onsen Miyamoto no Yu

A hot spring inn famous for its 'sumo ring open-air bath,' modeled after the Kokugikan sumo arena. I looked into its facilities—including a free shuttle bus from Seibu-Chichibu Station and Chichibu Station—as well as Rakuten Mobile signal conditions.

2026-09-02

Chichibu & Nagatoro Area

I Looked Into Nagatoro Camp Village

A campground with a natural hot spring called "Lantern Onsen" on its premises. I looked into the large communal bath lit by hurricane lanterns, along with the Rakuten Mobile signal conditions.

2026-09-02

Chichibu & Nagatoro Area

I Looked Into Nagatoro Onsen Hana no Omotenashi Chosei-kan

A long-established hot spring inn founded in the first year of the Taisho era, standing right by the Nagatoro Gorge and its Iwadatami rock formations. I looked into its all-rooms-river-view setup and checked the Rakuten Mobile signal conditions there.

2026-09-02

Hakodate Area

I Looked Into Yunokawa Prince Hotel Nagisatei

A Yunokawa Onsen hotel geared toward couples and families, where most of the 120 guest rooms come with their own open-air onsen bath. Rakuten Mobile signal conditions came back with an AAA rating, which looked good.

2026-09-02

Nasu Highlands Area

I Looked Into Nasu Kogen Auto Campsite

I looked into Nasu Kogen Auto Campsite, which offers AC power at every site along with drum-can baths and a dog run. I also checked the Rakuten Mobile signal conditions.

2026-09-02

Hakone Area

I Looked Into Onsen Hotel Gorakan

This is an 8-room inn whose main appeal is its milky-white cloudy hot spring water sourced from Owakudani, along with a reservable private open-air bath with a view that you can have all to yourself. I looked into the Rakuten Mobile signal conditions there.

2026-09-02

Hakodate Area

I Looked Into Hakodate Onuma Tsuruga Resort Epuy

Hakodate Onuma Tsuruga Resort Epuy features rooms with open-air baths using hot spring water sourced from around Lake Onuma. I wasn't able to check the Rakuten Mobile signal conditions this time.

2026-09-02

Hakodate Area

I Looked Into Premier Hotel -CABIN PRESIDENT- Hakodate

A hotel with a great location right in front of JR Hakodate Station and Hakodate Morning Market, complete with a night-view bar on the top floor. Rakuten Mobile's signal condition was rated C.

2026-09-02

Chichibu & Nagatoro Area

I Looked Into Ryokami Onsen Kokuminshukusha Ryokamiso

This is a national-style lodge that serves as a climbing base at the foot of Mount Ryokami, featuring an open-air bath where the rock bath and stone bath alternate daily. I looked into details like the Bushu Wagyu sukiyaki meals and the Rakuten Mobile signal conditions.

2026-09-02

Hakodate Area

I Looked Into Ryokan Ichinomatsu

A purely traditional Japanese-style ryokan just 8 minutes by car from Hakodate Airport, where all 29 rooms overlook a Japanese garden. Rakuten Mobile signal conditions came back with an AAA rating, which was good.

2026-09-02

Nasu Highlands Area

I Looked Into Ryokan Sankai

I looked into Ryokan Sankai at Nasu-Yumoto Onsen, known for its 100% source milky sulfur hot spring baths and in-room dining. I also checked the Rakuten Mobile signal conditions there.

2026-09-02

Nasu Highlands Area

I Looked Into Nasu Morikura

I looked into Nasu Morikura, a glamping facility where each of its three trailer houses comes with its own private sauna. I also checked the Rakuten Mobile signal conditions there.

2026-09-02

Hakodate Area

I Looked Into Heiseikan Shiosaitei

A Yunokawa Onsen ryokan where you can enjoy two different types of baths on an alternating men's/women's schedule - an observation bath overlooking the Tsugaru Strait and Mt. Hakodate, and an open-air bath surrounded by a rock garden. Rakuten Mobile signal conditions came back as an AAA rating, which was good.

2026-09-02

Hakodate Area

I Looked Into Yumoto Takuboku-tei

This inn is located in the Yunokawa Onsen area and is run by the Noguchi Kanko group, sharing its area with sister properties from the same group. Rakuten Mobile's signal conditions came back with a AAA rating, which is good.

2026-09-02

Hakodate Area

I Looked Into Tobetsu Kaze no Oka

Tobetsu Kaze no Oka is a log house village set on a hilltop with sweeping views of the Tsugaru Strait. Rakuten Mobile signal conditions came back as an AAA rating, which is a good sign.

2026-09-02

Hakodate Area

I Looked Into Yachigashira Onsen

A public bathhouse loved by locals, famous for its star-shaped outdoor bath modeled after the special historic site Goryokaku. Rakuten Mobile signal conditions were good, rated AAA.

2026-09-02

Hakone Area

I Looked Into Yuasobidokoro Hakone no Yu

This is a day-use hot spring facility featuring a 100% source-fed, non-circulating bath drawn from two dedicated hot spring wells, plus an outdoor bath just for guests with dogs. I checked the Rakuten Mobile signal conditions there.

2026-09-02

Hakodate Area

I Looked Into YUKARA GLAMPING HOKKAIDO

A glamping facility just 5 minutes on foot from Onuma-Koen Station, with 6 dome tents surrounding a fire circle. I wasn't able to check the Rakuten Mobile signal conditions this time.

2026-09-02

Nasu Highlands Area

I Looked into Shiobara Oami Yumori Tanakaya

I looked into Yumori Tanakaya, a Shiobara Onsen inn with three of its own hot spring sources where you can enjoy the 'Eight Baths Tour.' I also checked the Rakuten Mobile signal conditions.

2026-09-02

Hakodate Area

I Looked Into Yunokawa Kanko Hotel Shoen

A hot spring hotel in Yunokawa Onsen, part of the Itoen Hotels chain, featuring a private reservable open-air bath with a view on the top floor and a buffet dinner with over 50 dishes. Rakuten Mobile signal conditions came back as a C rating.

2026-09-02

Izukogen Area

I Looked Into Akazawa Day-Trip Hot Spring Hall

A day-trip hot spring facility in Ito City. I looked into Akazawa Day-Trip Hot Spring Hall, known for its large open-air bath overlooking the Pacific Ocean. I also checked the Rakuten Mobile signal conditions.

2026-09-01

Chichibu & Nagatoro Area

I Looked Into Araki Kosen Ryokan

A hot spring inn in Chichibu founded during the Edo period. It's known for water called "tamago-mizu" (egg water), named for a skin texture resembling egg whites. I also checked the Rakuten Mobile signal conditions.

2026-09-01

Hakone Area

I Looked Into Auberge Hakone Fontainebleau Sengokutei

An auberge where all 13 rooms come with open-air baths fed by natural hot spring water straight from the Owakudani source. I looked into this staycation spot in Sengokuhara, and also checked the Rakuten Mobile signal conditions.

2026-09-01

Hakone Area

I Looked Into Bihada no Yu Kinokuniya Ryokan

A ryokan in Ashinoyu Onsen known for its sulfur springs. It also has a private bath designed to recreate an Edo-era hot spring retreat. I also checked the Rakuten Mobile signal conditions.

2026-09-01

Chichibu & Nagatoro Area

I Looked Into Bokura no Minano Base

Bokura no Minano Base is a campsite in Minano Town. Its clean restroom/shower building seems to be well-reviewed. I also checked the Rakuten Mobile signal conditions.

2026-09-01

Chichibu & Nagatoro Area

I Looked Into Chichibu Yumoto Bukou Onsen (Annex)

The annex of Bukou Onsen is a standalone cottage-type lodging building with 12 rooms in total. Guests can use the main building's "Beautiful Skin Bath" for free. I also checked the Rakuten Mobile signal conditions.

2026-09-01

Nasu Highlands Area

I Looked Into Camp & Cabins Nasu Kogen

A large-scale campground located in Nasu Kogen. There are 19 types of tent sites, plus free access to a large communal bath and Wi-Fi. I also checked out the Rakuten Mobile signal conditions.

2026-09-01

Chichibu & Nagatoro Area

I Looked Into Chichibu Onsen Daimasu Ryokan

Daimasu Ryokan is a simple sulfur spring inn located in Chichibu City. I looked into its large communal bath, which uses water transported from Manganno-yu. The Rakuten Mobile signal condition was especially good, rated "AAA."

2026-09-01

Chichibu & Nagatoro Area

I Looked Into Hatago Ichiban

Hatago Ichiban is an inn located in Chichibu. I looked into this inn, which has a 24-hour large communal bath and open-air bath, plus rooms with their own private open-air baths. The Rakuten Mobile signal check came back with a good rating of "AA."

2026-09-01

Kawaguchiko & Fuji Five Lakes Area

I Looked Into Fujiyama Onsen

Fujiyama Onsen is a day-use hot spring facility in Fujiyoshida City. I looked into this facility, known for its solid wood bath hall said to be one of the largest of its kind in Japan. Rakuten Mobile's signal was especially good, rated "AAA."

2026-09-01

Hakone Area

I Looked Into Mizu no Kaori, a Hot Spring Inn in Hakone Gora

A small hot spring inn in Gora with only 8 rooms total. It's unusual in that it also offers a Japanese-style dormitory room. I also checked the Rakuten Mobile signal conditions.

2026-09-01

Chichibu & Nagatoro Area

I Looked Into Guesthouse Nishiki

A completely non-smoking guesthouse in Chichibu. I looked into a place where guests can socialize in a common room with a wood stove and a kotatsu, and also checked the Rakuten Mobile signal conditions.

2026-09-01

Hakone Area

I Looked Into Matsuzakaya Honten at Hakone Ashinoyu Onsen

This is a ryokan with its own private hot spring source in Ashinoyu Onsen. I looked into its rare spring water, which apparently contains three types of spring qualities—sulfur, sulfate, and bicarbonate—all from a single source. I also checked the Rakuten Mobile signal conditions.

2026-09-01

Hakone Area

I Looked Into Hakone Gora Karaku

A hot spring inn in Gora run by ORIX HOTELS&RESORTS. Every room comes with its own private open-air bath. I also checked the Rakuten Mobile signal conditions.

2026-09-01

Hakone Area

I Looked Into Hakone Kowakidani Onsen Mizu no Oto

Kowakidani Onsen, an inn operated by Kyoritsu Resort. I looked into Mizu no Oto, which has two hot spring sources and four large communal baths. I also checked the Rakuten Mobile signal conditions.

2026-09-01

Nasu Highlands Area

I Looked Into HOLIDAY CAMP

HOLIDAY CAMP is located in the Nasu Highlands. I looked into this campground, which has 21 auto camp sites with AC power. I also checked the Rakuten Mobile signal conditions.

2026-09-01

Nasu Highlands Area

Researching Hotel Mori no Kaze Nasu

A new hotel in the Nasu Highlands. It features a top-floor observation bath with a bicarbonate hot spring known as the "Beauty Skin Bath." I also checked the Rakuten Mobile signal conditions.

2026-09-01

Nasu Highlands Area

I Looked Into Yufuri Nasu Kogen Onsen Lodge, a Hands-Off Style Inn

A 70-room lodge in the Nasu Kogen area. I looked into this lodge, famous for its "Sky Open-Air Pool" fed by continuously flowing natural hot spring water. I also checked on Rakuten Mobile signal conditions.

2026-09-01

Chichibu & Nagatoro Area

I Looked Into Roadside Station Ryokami Onsen Yakushi-no-yu

This is a day-use hot spring facility attached to a roadside station, where you can enjoy a spacious indoor bath with alkaline simple thermal water. Rakuten Mobile signal conditions came back as a C rating.

2026-09-01

Chichibu & Nagatoro Area

I Looked Into Yushuku Hitsujiyama-tei

This is a hot spring inn where all 10 rooms come with their own private open-air bath, fed by the Mitsumine-no-Yu spring of Chichibu Otaki Onsen. Rakuten Mobile's signal condition came back as a C rating.

2026-09-01

Kawaguchiko & Fuji Five Lakes Area

I Looked Into Fuji Chobo no Yu Yurari

A day-use hot spring facility in Narusawa Village. I checked out the Rakuten Mobile signal conditions there.

2026-08-31

Kawaguchiko & Fuji Five Lakes Area

I Looked Into Glamping Resort Varie

A glamping facility in Funatsu, Fujikawaguchiko Town. I looked into the Rakuten Mobile signal conditions.

2026-08-31

Hakone Area

I Looked Into Hakone Kowakien Mikawaya Ryokan

A hot spring inn in Kowakidani, run by the Fujita Kanko Resort Group. I checked the Rakuten Mobile signal conditions there.

2026-08-31

Hakone Area

I Looked Into the Hakone Sengokuhara Prince Hotel

A hotel in the Prince Hotel chain located in Sengokuhara. I checked out the Rakuten Mobile signal conditions there.

2026-08-31

Chichibu & Nagatoro Area

I Looked Into Chichibu Onsen Hananoya

A hot spring inn located right behind Michi-no-Eki Arakawa. I checked out the Rakuten Mobile signal conditions.

2026-08-31

Nasu Highlands Area

I Looked Into Hotel Green Pearl Nasu

A hot spring inn in Nasu-Yumoto known for its unfiltered natural spring water and kaiseki cuisine. I checked the Rakuten Mobile signal conditions there.

2026-08-31

Hakone Area

I Looked Into Hotel Mori no Kaze Hakone Sengokuhara

A hotel in Sengokuhara. I checked out the Rakuten Mobile signal conditions.

2026-08-31

Kawaguchiko & Fuji Five Lakes Area

Looking into Hotel Regina Kawaguchiko

A hotel located in Funatsu, Fujikawaguchiko Town. I checked out the Rakuten Mobile signal conditions.

2026-08-31

Chichibu & Nagatoro Area

I Looked Into Okuchichibu Kaniwa Auto Campsite

An auto campsite located in Otaki, Chichibu City. I checked out the Rakuten Mobile signal conditions there.

2026-08-31

Hakone Area

I Looked Into Kappa Tengoku

A day-trip hot spring facility on a hill near Hakone-Yumoto Station. I checked the Rakuten Mobile signal conditions there.

2026-08-31

Nasu Highlands Area

I Looked Into Nakafujiya Ryokan

A long-established ryokan drawing from the same hot spring source as Shika-no-yu in Nasu. I also checked the Rakuten Mobile signal conditions.

2026-08-31

Nasu Highlands Area

I Looked Into Nasu Glamping

A glamping facility attached to Nasu Country Club. I looked into the Rakuten Mobile signal conditions.

2026-08-31

Chichibu & Nagatoro Area

I Looked Into Riverside Camp Field Chichibu

A camp and glamping facility located in Shimokagemori, Chichibu City. I checked out the Rakuten Mobile signal conditions there.

2026-08-31

Chichibu & Nagatoro Area

I Looked Into Shibahara Onsen Teuchi Soba no Yado Yanagiya

This Shibahara Onsen inn is proud of its handmade soba, and you can enjoy a cypress open-air bath in a wooden bathhouse. The Rakuten Mobile signal check came back with a C rating.

2026-08-31

Nasu Highlands Area

I Looked Into Shio no Yu Onsen Rengetsu

A Dormy Inn-affiliated hot spring inn located in the Shiobara Onsen area of Nasushiobara. I looked into the Rakuten Mobile signal conditions there.

2026-08-31

Kawaguchiko & Fuji Five Lakes Area

I Looked Into Shuhokaku Kogetsu

A hot spring inn located in Kawaguchi, Fujikawaguchiko Town. I checked out the Rakuten Mobile signal conditions there.

2026-08-31

Hakone Area

I Looked Into Tensei-en, a Hot Spring Ryokan in Hakone-Yumoto

A hot spring ryokan located in Hakone-Yumoto. I checked the Rakuten Mobile signal conditions there.

2026-08-31

Chichibu & Nagatoro Area

I Looked Into Tomoegawa-so

A small inn at Tomoegawa Hot Spring known for its ancient cypress bath, which can also be reserved for private use. Rakuten Mobile signal conditions came back as a C rating.

2026-08-31

Nasu Highlands Area

I Looked Into Torinome River Park Auto Campsite

An auto campsite located in a river park in Nasushiobara. I looked into the Rakuten Mobile signal conditions there.

2026-08-31

Chichibu & Nagatoro Area

I Looked Into Wado Kosen Yu no Yado Wado

A traditional inn along the Yokoze River, said to have the oldest mineral spring among the Seven Hot Springs of Chichibu. I checked out the Rakuten Mobile signal conditions there.

2026-08-31

Chichibu & Nagatoro Area

I Looked Into Ogano Onsen Echigoya Ryokan

A hot spring inn located in Ogano, Chichibu. I checked the Rakuten Mobile signal conditions.

2026-08-30

Chichibu & Nagatoro Area

I Looked Into FENOZ MORITO CAMP

An auto camp site in Chichibu. I checked the Rakuten Mobile signal conditions.

2026-08-30

Kawaguchiko & Fuji Five Lakes Area

I Looked Into Fuji Marriott Hotel Yamanakako

A Marriott-affiliated hotel operated by Forest Trust Hotels & Resorts, standing on the shore of Lake Yamanaka. I checked out the Rakuten Mobile signal conditions.

2026-08-30

Nasu Highlands Area

I Looked Into Gran Hideout Nasu Kogen

A glamping facility that had its grand opening in 2024, with a new building added in 2026. I looked into the Rakuten Mobile signal conditions.

2026-08-30

Hakone Area

I Looked Into Hakone Kowakien Yunessun

A day-trip hot spring facility where you can enjoy both a bathing-suit outdoor hot spring theme park and 'Mori no Yu,' a bathe-in-the-nude section. I also checked the Rakuten Mobile signal conditions.

2026-08-30

Nasu Highlands Area

I Looked Into Hotel Laforet Nasu

A hotel run by Laforet Hotels & Resorts, standing on a hill in Nasu Yumoto. I checked into the Rakuten Mobile signal conditions there.

2026-08-30

Hakone Area

I Looked Into Hotel Marroad Hakone

A resort hotel on a hillside in Gora, part of the Toto Motor Group. I looked into the Rakuten Mobile signal conditions.

2026-08-30

Kawaguchiko & Fuji Five Lakes Area

I Looked Into Hotel Mount Fuji

A hotel with Mount Fuji views, built on a hill by Lake Yamanaka. I checked out the Rakuten Mobile signal conditions.

2026-08-30

Kawaguchiko & Fuji Five Lakes Area

I Looked Into Koraku Onyado Fuji Ginkei

A hot spring inn in the Fuji-Kawaguchiko Onsen area. I checked the Rakuten Mobile signal conditions.

2026-08-30

Hakone Area

I Looked Into Miyagino Onsen Kaikan

A town-run day-trip hot spring facility operated by Hakone Town. I checked the Rakuten Mobile signal conditions.

2026-08-30

Chichibu & Nagatoro Area

I Looked Into Morethan Paradise

This is a dome tent glamping facility that emphasizes privacy, operating with only 3 rooms and limiting bookings to 3 groups per day. The Rakuten Mobile signal status couldn't be determined (the tool showed a maintenance notice).

2026-08-30

Nasu Highlands Area

I Looked Into Nasu Kogen no Yado Sansuikaku

A popular hot spring inn with in-room baths fed by Omaru Onsen spring water. I checked out the Rakuten Mobile signal conditions.

2026-08-30

Nasu Highlands Area

I Looked Into Oedo Onsen Monogatari Premium Hotel New Shiobara

A lodging facility from the Oedo Onsen Monogatari group located in the Shiobara Onsen area. I checked the Rakuten Mobile signal conditions there.

2026-08-30

Chichibu & Nagatoro Area

I Looked Into River Park Kami-Nagatoro Auto Campsite

This is an auto campsite in Nagatoro equipped with Western-style flush toilets and paid power sites. Rakuten Mobile signal conditions were unable to be judged (a maintenance message was shown).

2026-08-30

Chichibu & Nagatoro Area

I Looked Into +RIVERPOOL Saitama Chichibu

A glamping facility in Minano Town that also offers a sauna plan. I checked the Rakuten Mobile signal conditions.

2026-08-30

Hakone Area

I Looked Into Sanso Nakamura

A hot spring inn in Sengokuhara with an indoor bath that lets you enjoy views of a bamboo grove. I also checked the Rakuten Mobile signal conditions.

2026-08-30

Hakone Area

I Looked Into The Prince Hakone Lake Ashinoko

A luxury Prince Hotels resort on the shore of Lake Ashinoko. I checked the Rakuten Mobile signal conditions.

2026-08-30

Nasu Highlands Area

I Looked Into TOWA Pure Cottage

A cottage operated as the official hotel of Nasu Highland Park. I checked out the Rakuten Mobile signal conditions.

2026-08-30

Kawaguchiko & Fuji Five Lakes Area

I Looked Into VISION GLAMPING Resort & Spa Yamanakako

A glamping facility where every room has a Mt. Fuji view, plus a private open-air bath and private sauna. I also checked the Rakuten Mobile signal conditions.

2026-08-30

Chichibu & Nagatoro Area

I Looked Into Shomaru Kids Auto Campsite

An auto campsite that was renewed from the former "Woody Site Shomaru Campsite." I looked into the Rakuten Mobile signal conditions there.

2026-08-30

Chichibu & Nagatoro Area

I Looked Into Chichibu Kawabata Onsen Bon no Yu

Chichibu Kawabata Onsen Bon no Yu is a day-use hot spring facility located in the Kobashira area of Chichibu City. It's a hot-spring-cation spot with private baths that you can stop by on your way home from camping. I also checked the Rakuten Mobile signal conditions.

2026-08-29

Chichibu & Nagatoro Area

I Looked Into Chichibu Sadamine Seiryu Camping Ground

Chichibu Sadamine Seiryu Camping Ground is a campsite located along a clear stream in Sadamine, Chichibu City. It's open year-round, making it easy to use anytime. I also checked the Rakuten Mobile signal conditions.

2026-08-29

Chichibu & Nagatoro Area

I Looked Into ELL'S PARK Nagatoro

ELL'S PARK Nagatoro is a trailer-house-style glamping facility built specifically for guests traveling with their dogs, complete with dog campsites. I also checked into the Rakuten Mobile signal conditions there.

2026-08-29

Chichibu & Nagatoro Area

I Looked Into Komadori-so, an Inn at the Headwaters of Okuchichibu

Komadori-so is a cottage lodging facility where you can stay alongside woodworking experiences at the Forest Science Museum. It also has a hot spring bath in the basement, fed by a natural source. Rakuten Mobile signal conditions came back as a C rating.

2026-08-29

Hakone Area

I Looked Into HAKONE NICA

HAKONE NICA is a hotel-vacation spot where every room comes with its own semi-open-air bath. All rooms are a spacious 50 square meters, letting you enjoy the nature of Hakone. I also checked the Rakuten Mobile signal conditions.

2026-08-29

Hakone Area

I Looked Into Hakone Yutowa

Hakone Yutowa is a hotel-type staycation spot in the Gora area, known for its two-part structure: Japanese-modern-style guest rooms and a condominium building. I also checked the Rakuten Mobile signal conditions there.

2026-08-29

Chichibu & Nagatoro Area

I Looked Into Ikoi no Mura Heritage Mi no Yama

This is a hot spring inn in Minano Town known for its medicinal herb bath called 'Kuma-san no Yu,' where seasonal herbs float in the water. As for Rakuten Mobile signal conditions, the result was undetermined (showing a maintenance notice).

2026-08-29

Hakone Area

I Looked Into Hotel Green Plaza Hakone

Hotel Green Plaza Hakone, located in Sengokuhara. A chain-style hotel-cation spot that also has locations in Karuizawa, Kamogawa, and more. I also checked the Rakuten Mobile signal conditions.

2026-08-29

Nasu Highlands Area

I Looked Into Ito-en Hotel Shiobara

Ito-en Hotel Shiobara is a chain hotel located in Shiobara, Nasushiobara City. I checked the Rakuten Mobile signal conditions there as a potential "hocance" (hotel + vacance) spot in the Shiobara hot spring area.

2026-08-29

Nasu Highlands Area

I Looked Into KA-MA-DO Campground

KA-MA-DO Campground is located in the Sembonmatsu area of Nasushiobara City. As a candidate campsite in the Nasu area, I checked the Rakuten Mobile signal conditions.

2026-08-29

Kawaguchiko & Fuji Five Lakes Area

I Looked Into Kasuitei Ooya

Kasuitei Ooya is a 46-room hot spring inn with a full view of Lake Kawaguchi. It's known for its large communal baths split between the basement floor and the top floor. I also checked the Rakuten Mobile signal conditions there.

2026-08-29

Chichibu & Nagatoro Area

I Looked Into Machizumi Kyakushitsu Chichibu-juku

This is a unique inn made up of renovated old houses scattered across downtown Chichibu, split into multiple separate buildings. The Rakuten Mobile signal condition was especially good, rated AAA.

2026-08-29

Hakone Area

I Looked Into Mount View Hakone

The official name is apparently 'Kawarano-yu Mount View Hakone,' a hot spring getaway spot in Sengokuhara. It has separate large baths and open-air baths for men and women, with day-use bathing also available. I also checked the Rakuten Mobile signal conditions.

2026-08-29

Nasu Highlands Area

I Looked Into Ryokan Shimizuya

Ryokan Shimizuya is a Japanese inn located in Nasu-Yumoto. For anyone considering a hot spring trip to Nasu, I checked the Rakuten Mobile signal conditions there.

2026-08-29

Nasu Highlands Area

I Looked Into Sachinoyu Onsen in Oku-Nasu's Taisho Village

Sachinoyu Onsen is a hot spring inn in Oku-Nasu themed around Taisho-era village. Guests staying overnight can enjoy the tatami-floored bath called "Tatami no Yu." I also checked the Rakuten Mobile signal conditions there.

2026-08-29

Kawaguchiko & Fuji Five Lakes Area

I Looked Into Shoji Lakeside Camp

Shoji Lakeside Camp is a lakeside campground with 9 sites right in front of Shoji Lake Hotel. As a candidate campsite in the Fuji Five Lakes area, I checked the Rakuten Mobile signal conditions there.

2026-08-29

Hakone Area

I Looked Into Tonosawa Ichinoyu Honkan

Tonosawa Ichinoyu Honkan, part of the Ichinoyu group, is a hot spring retreat along the Tonosawa gorge. I also checked the Rakuten Mobile signal conditions there.

2026-08-29

Kawaguchiko & Fuji Five Lakes Area

I Looked Into Ubuya

Ubuya is a hot spring inn located in the Fuji-Kawaguchiko Onsen area. It's proud of its "Fuji no Yu" hot spring baths, which offer views of Mt. Fuji and Lake Kawaguchi. I also checked the Rakuten Mobile signal conditions there.

2026-08-29

Chichibu & Nagatoro Area

I Looked Into Okuchichibu Arakawa Yatsugawakan

Okuchichibu Arakawa Yatsugawakan is a ryokan in the Shirokyu area of Arakawa, Chichibu City, known for its prized private open-air baths. It's a quiet hot spring staycation spot along a gorge. I also checked the Rakuten Mobile signal conditions.

2026-08-29

Hakone Area

I Looked Into Yoshiike Ryokan

Yoshiike Ryokan is a long-established inn in Hakone-Yumoto Onsen. It's a hocance destination in the Yumoto area that's easy to access from the station. I also checked the Rakuten Mobile signal conditions there.

2026-08-29

Chichibu & Nagatoro Area

I Looked Into Bukou Campground

Bukou Campground sits right next to Chichibu Yumoto Bukou Onsen. Its biggest draw is being able to hop straight into a hot spring after camping. I also checked the Rakuten Mobile signal conditions there.

2026-08-28

Nasu Highlands Area

I Looked Into Camp Rabbit, an Auto Campsite

Camp Rabbit is an auto campsite located in the Toyohara area of Nasu Highland. As a candidate campsite in the Nasu area, I checked the Rakuten Mobile signal conditions there.

2026-08-28

Chichibu & Nagatoro Area

I Looked Into Chichibu Sai no Kuni Camp Village

Chichibu Sai no Kuni Camp Village is a campground surrounded by nature in Urayama, Chichibu City. You can spend time along a quiet valley. I also checked the Rakuten Mobile signal conditions.

2026-08-28

Kawaguchiko & Fuji Five Lakes Area

I Looked Into Fuji View Hotel

Fuji View Hotel is a classic hotel in the Fujiya Hotel group, proud of its location overlooking Mt. Fuji and Lake Kawaguchi. I also checked the Rakuten Mobile signal conditions.

2026-08-28

Chichibu & Nagatoro Area

I Looked Into Glamping IRODORI Chichibu: Forest of Starry Sky and Clear Stream

Glamping IRODORI Chichibu: Forest of Starry Sky and Clear Stream is a glamping facility located within Chichibu Sadamine Seiryu Campground. It lets you enjoy hands-free glamping along a clear stream. I also checked the Rakuten Mobile signal conditions.

2026-08-28

Hakone Area

I Looked Into Gora Kasen

Gora Kasen is a long-established ryokan perched on a hillside in Gora, Hakone. Its special charm lies in the private inclined elevator you take to reach it. I also checked Rakuten Mobile signal conditions there.

2026-08-28

Hakone Area

I Looked Into Hakone Hotel

Hakone Hotel stands on the shore of Lake Ashi. It's a location where you can relax while looking out over the lake. I also checked the Rakuten Mobile signal conditions.

2026-08-28

Kawaguchiko & Fuji Five Lakes Area

I Looked Into Hoshinoya Fuji

Hoshinoya Fuji is a glamping-style resort known for its terraces and cabins that appear to float along a slope. I checked the Rakuten Mobile signal conditions for this extraordinary stay at the foot of Mt. Fuji.

2026-08-28

Nasu Highlands Area

I Looked Into Hotel Blanvert Nasu

Hotel Blanvert Nasu is located in Nasu-Yumoto. I checked the Rakuten Mobile signal conditions as a potential hokans (hotel + vacance) spot in the Nasu hot spring area.

2026-08-28

Hakone Area

I Looked Into Hotel Kagetsuen

Hotel Kagetsuen is known for its 'Sakura no Yu' observation bath, fed by its own hot spring source drawn from about 110 meters underground. I checked the Rakuten Mobile signal conditions for those considering a hot spring trip to Sengokuhara.

2026-08-28

Izukogen Area

I Looked Into Izukogen Hotel Itsutsuboshi

Izukogen Hotel Itsutsuboshi features a natural hot spring called 'Bijin no Yu' (Beauty Spring), complete with an indoor bath, outdoor bath, and sauna. It also offers day-use bathing, so it's easy to drop by. I also checked the Rakuten Mobile signal conditions.

2026-08-28

Izukogen Area

I Looked Into Izu Kogen Onsen Hotel Mori no Izumi

Izu Kogen Onsen Hotel Mori no Izumi offers two large communal baths, Mori no Yu and Izumi no Yu, available on an alternating schedule. Its water quality is known as "beautifying water." I also checked the Rakuten Mobile signal conditions.

2026-08-28

Boso Peninsula Area

I Looked Into Kamogawa Grand Hotel

Kamogawa Grand Hotel is proud of its large communal bath, Yuya Umi no Kairo, which looks out over the Pacific Ocean. It also has an open-air rock bath and sauna fed by Kamogawa Onsen hot spring water, making it a solid option for a hotel staycation when you're worn out from camping. I also checked the Rakuten Mobile signal conditions.

2026-08-28

Boso Peninsula Area

I Looked Into Kamogawakan

Kamogawakan is proud of its two in-house hot spring sources and its rooftop hot spring pool "HARUKA" overlooking the Pacific Ocean. For anyone curious about it as a seaside "hokans" (hotel + vacance) destination, I checked the Rakuten Mobile signal conditions there.

2026-08-28

Nasu Highlands Area

I Looked Into Kokoro no Oyado Jizaisou

Kokoro no Oyado Jizaisou is a long-established inn in Nasu-Yumoto. I checked the Rakuten Mobile signal conditions for anyone considering a hot spring trip to Nasu.

2026-08-28

Chichibu & Nagatoro Area

I Looked Into PICA Chichibu

PICA Chichibu is a glamping facility inside Chichibu Muse Park, with an on-site bathing facility. All cottages come with flush toilets for a comfortable stay. I also checked the Rakuten Mobile signal conditions.

2026-08-28

Hakone Area

I Looked Into TAOYA Hakone

TAOYA Hakone, a new facility from the Oedo Onsen Monogatari group, had its grand opening in November 2025. Every room offers a forest view overlooking Hakone's woods. I also checked the Rakuten Mobile signal conditions.

2026-08-28

Boso Peninsula Area

I Looked Into TAVISTAR

TAVISTAR is a glamping facility with only 7 cabins total and a cap of 7 groups per day, valuing that sense of privacy. It also comes with amenities set up for guests traveling by motorcycle or bicycle. I also checked the Rakuten Mobile signal conditions there.

2026-08-28

Izukogen Area

I Looked Into Village Izukogen

Village Izukogen is a resort hotel in the Sumitomo Realty & Development Villa Fontaine group. I checked the Rakuten Mobile signal conditions there as a potential "hocance" (hotel + vacance) spot for relaxing in Izukogen.

2026-08-28

Hakone Area

I Looked Into Yumoto Fujiya Hotel

Yumoto Fujiya Hotel is a classic, long-established hotel in the Fujiya Hotel group. I checked the Rakuten Mobile signal conditions at this historic staycation spot in Hakone-Yumoto.

2026-08-28

Atami Area

I Looked Into Ajiro Kanko Hotel

A purely Japanese-style hot spring inn with tatami flooring throughout and its own hot spring source running 24/7. I also checked the Rakuten Mobile signal conditions.

2026-08-27

Atami Area

I Looked Into Tsuki no Sumika Atami Juraku Hotel

A hotel just 3 minutes on foot from Atami Station, boasting a hot spring certified for its moisturizing effect. I also checked the Rakuten Mobile signal conditions.

2026-08-27

Atami Area

I Looked Into Atami Korakuen Hotel

A hotel about 10 minutes from Atami Station via free shuttle bus, known for its panoramic bath overlooking Atami city and Sagami Bay. I also checked out the Rakuten Mobile signal conditions.

2026-08-27

Karuizawa Area

I Looked Into Hoshino Onsen Tombo no Yu

A day-trip hot spring in Karuizawa that opened during the Taisho era, known for its unheated, undiluted natural spring water flowing straight from the source. I also looked into Rakuten Mobile signal conditions.

2026-08-27

Karuizawa Area

I Looked Into Hotel Maroad Karuizawa

A hotel that's a 10-minute walk from Karuizawa Station and also offers a free shuttle bus. I also checked out the Rakuten Mobile signal conditions.

2026-08-27

Okutama Area

I Looked Into Kawabe Onsen Ume-no-yu

A day-trip hot spring directly connected to the north exit concourse of JR Kawabe Station—you can get there straight from inside the station. I also checked the Rakuten Mobile signal conditions.

2026-08-27

Karuizawa Area

I Looked Into KARUIZAWA CAMP GOLD

A high-spec campground with a wide variety of site types, complete with power and Wi-Fi at every site. I also checked out the Rakuten Mobile signal conditions.

2026-08-27

Karuizawa Area

I Looked Into Karuizawa Sengataki Onsen

Run by Prince Hotels & Resorts, this day-use hot spring facility offers a garden open-air bath and a Finnish sauna. I also looked into the Rakuten Mobile signal conditions.

2026-08-27

Okutama Area

I Looked Into Hinohara Onsen Center Kazuma no Yu

A day-use hot spring facility with alkaline simple hot spring water, located in Hinohara Village—the only village in Tokyo. I also checked the Rakuten Mobile signal conditions.

2026-08-27

Karuizawa Area

I Looked Into Mampei Hotel

A historic classic hotel in the Kyu-Karuizawa area, established in 1894. I also checked the Rakuten Mobile signal conditions.

2026-08-27

Okutama Area

I Looked Into Hikawago Asa no Yu Mikawaya Ryokan

A long-established hot spring inn founded in 1819, just a 7-minute walk from Okutama Station. I also checked the Rakuten Mobile signal conditions.

2026-08-27

Okutama Area

I Looked Into Okutama Onsen Moegi-no-yu

A day-use hot spring about 10 minutes on foot from Okutama Station, known for its open-air bath overlooking the clear waters of the Tama River and the surrounding mountains. I also checked the Rakuten Mobile signal conditions.

2026-08-27

Atami Area

I Looked Into Ocean Spa Fuua

A day-use hot spring famous for its standing outdoor bath overlooking Sagami Bay. I also checked the Rakuten Mobile signal conditions.

2026-08-27

Atami Area

I Looked Into Oedo Onsen Monogatari Premium Atami

A hot spring inn just steps from Atami Sun Beach, known for its Japanese-modern open-air bath. I also checked Rakuten Mobile signal conditions.

2026-08-27

Nasu Highlands Area

I Looked Into Shiobara Green Village

A camp site in Shiobara Onsen that's friendly to indoor types too, with AC power available at many of the auto sites. The Rakuten Mobile signal came back as a C rating.

2026-08-27

Okutama Area

I Looked Into Takao Ne

A place to stay just 1 minute on foot from Takaosanguchi Station, with a cafe-attached terrace you can also use for a day visit. I also checked the Rakuten Mobile signal conditions there.

2026-08-27

Okutama Area

I Looked Into Takaosan Onsen Gokurakuyu

A day-use hot spring facility right next to Takaosanguchi Station on the Keio Line, with natural hot spring water drawn from about 1,000 meters underground. I also looked into the Rakuten Mobile signal conditions.

2026-08-27

Atami Area

I Looked Into Atami Ekimae Onsen Bathhouse (Tawara Bathhouse)

A community bathhouse with a naturally sourced, unfiltered hot spring just 2-3 minutes on foot from Atami Station. I also checked the Rakuten Mobile signal conditions.

2026-08-27

Nasu Highlands Area

I Looked Into WHITE LAMP

This is a glamping resort in the Nasu Highlands with 7 room types and 15 rooms in a Nordic-inspired style, including a wooden dome cabin as large as 10 meters in diameter. As for Rakuten Mobile signal conditions, the result was undeterminable (a maintenance notice was shown).

2026-08-27

Nasu Highlands Area

I Looked Into Yutorelo Nasushiobara

This is a hotel in Shiobara Onsen with a rock-built outdoor bath fed by its own hot spring source, where you can enjoy the sound of a mountain stream. Rakuten Mobile signal conditions came back as a C rating.

2026-08-27

Hakone Area

I Looked Into Ashinoko Camp Village Lakeside Villa

The only campsite on the shores of Lake Ashi in Hakone. I looked into the facilities—from cabin buildings to auto and tent sites—as well as Rakuten Mobile signal conditions.

2026-08-26

Boso Peninsula Area

I Looked Into Benten Kosen Hot Spring Inn

A hideaway hot spring inn limited to just 4 rooms and 4 groups per day. I looked into its source-fed hot spring with a rare quality that changes color within a single day, plus the Rakuten Mobile signal conditions there.

2026-08-26

Boso Peninsula Area

I Looked Into Boso Kamogawa Onsen Zeku

A hot spring inn renovated in 2023, where every room comes with its own semi-open-air hot spring bath. I looked into the private-room dining featuring spiny lobster and abalone, as well as the Rakuten Mobile signal conditions.

2026-08-26

Hakone Area

I Looked Into Hakone Yuryo

A day-trip hot spring popular for its four open-air baths and the private reserved open-air bath "Hanaden." I also checked out the large communal bath with its löyly (sauna steam) service, along with the Rakuten Mobile signal conditions.

2026-08-26

Nasu Highlands Area

I Looked Into Takahara Hoshi no Mori Campground (Hoshi no Mori Auto Campground)

An auto campground at the foot of Yahatagahara, set in a quiet basin-shaped location. I looked into everything from free sites to powered V-sites, plus the Rakuten Mobile signal conditions.

2026-08-26

Nasu Highlands Area

I Looked Into Hotel Epinard Nasu

A hotel that boasts one of the largest natural hot springs in the Nasu Kogen area, plus an all-weather indoor heated pool. I looked into the free shuttle bus from JR Nasu-Shiobara Station and the Rakuten Mobile signal conditions there.

2026-08-26

Izukogen Area

I Looked Into Izu iroha

A whole-building rental hotel for groups that can accommodate up to 40 people. I looked into this facility, which comes with a Finnish sauna and workation amenities, plus the Rakuten Mobile signal conditions.

2026-08-26

Izukogen Area

I Looked Into Izu Kogen no Yu, a Drop-In Hot Spring

This is a day-trip hot spring known for its mud bath and mud pack treatments. I looked into its convenient access—just a 5-minute walk from Izu Kogen Station—as well as the Rakuten Mobile signal conditions.

2026-08-26

Kawaguchiko & Fuji Five Lakes Area

I Looked Into Kaiun no Yu

A day-use hot spring about 5 minutes by car from Kawaguchiko Station, with a free shuttle service. I looked into its granite indoor bath, garden-style open-air bath, and Rakuten Mobile signal conditions (rated C).

2026-08-26

Izukogen Area

I Looked Into Kamenoi Hotel Izu Kogen

A hotel that prides itself on two large communal baths that swap between men's and women's use in the morning and evening. I looked into the view overlooking the Izu Islands and the Rakuten Mobile signal conditions.

2026-08-26

Kawaguchiko & Fuji Five Lakes Area

I Looked Into Lake Motosu Campground

A campground spread along the shore of Lake Motosu, with a free-site format where you can park your car right next to your spot. I looked into the range of accommodation options from tents to bungalows and cottages, plus the Rakuten Mobile signal conditions.

2026-08-26

Nasu Highlands Area

I Looked Into Nasu Takahara Auto Campsite

An auto campsite offering a seasonal open-air bath alongside log cottage options. I looked into its well-rounded facilities, including powered sites and pet-friendly sites, plus the Rakuten Mobile signal conditions (rated C).

2026-08-26

Boso Peninsula Area

I Looked Into Nemoto Marine Camp Site

A camp site known for its beach sites right in front of the Pacific Ocean. I looked into this open, seaside spot where you can enjoy swimming and BBQ, as well as the Rakuten Mobile signal conditions there.

2026-08-26

Kawaguchiko & Fuji Five Lakes Area

I Looked Into Saiko Kohan Campsite

A lakeside campsite open year-round, where you can choose anything from a free tent site to a bungalow. I looked into its location just five minutes on foot from a craft beer brewery, along with its Rakuten Mobile signal conditions (rated C).

2026-08-26

Nasu Highlands Area

I Looked Into Shika-no-yu Hot Spring

With a history of over 1,300 years since its founding, this original day-use hot spring in Nasu-Yumoto Onsen is said to have even been visited by the poet Matsuo Basho. I looked into its unique 'kaburi-yu' bathing custom and checked the Rakuten Mobile signal conditions there.

2026-08-26

Hakone Area

I Looked Into SPRINGS VILLAGE Hakone Glamping Resort

A glamping resort where you can choose anything from cabins to apartments with natural hot springs. I looked into the open-air rooms with BBQ decks and checked the Rakuten Mobile signal conditions.

2026-08-26

Boso Peninsula Area

I Looked Into Tadara Kitahama Coastal Campsite

A coastal campsite known for its shallow waters and beautiful sandy beach. I looked into its simple facilities that seem easy to use for everyone from solo campers to families, as well as the Rakuten Mobile signal conditions.

2026-08-26

Hakone Area

I Looked Into Tenzan Toji-kyo

A hot spring retreat with seven of its own natural springs along the Suzukawa River. I looked into this rustic onsen with its kettle bath and steam sauna, as well as Rakuten Mobile's signal conditions there (rated C).

2026-08-26

Izukogen Area

I Looked Into Anda Resort Izu Kogen

An all-inclusive Bali-style resort where you can use 10 private bath rooms for free. I looked into this property with its abundant in-house activities like a Starlit BBQ, as well as its Rakuten Mobile signal conditions.

2026-08-26

Kawaguchiko & Fuji Five Lakes Area

I Looked Into Yamanakako Onsen Beni-Fuji no Yu

An outdoor bath with a view of Mt. Fuji, where you can apparently see "Beni-Fuji" (Red Fuji) on winter mornings. I looked into the alkaline simple hot spring described as a "beauty bath," plus the Rakuten Mobile signal conditions (rated C).

2026-08-26

Hakone Area

I Looked Into Hakone Kowakien Motoyu Mori no Yu

This is a day-trip hot spring facility inside Hakone Kowakien Yunessun, where you can enjoy a variety of baths, including a garden open-air bath overlooking the mountains of Hakone and a Shigaraki ware pottery bath. Rakuten Mobile's signal condition was rated C.

2026-08-25

Hakone Area

I Looked Into Hakone Yumoto Higaeri Onsen Izumi

This is a day-trip hot spring facility that uses seven different hot spring sources, including Soyu, said to be the oldest source in Hakone, across two bathing rooms that switch between men's and women's use. The Rakuten Mobile signal condition was rated C.

2026-08-25

Kawaguchiko & Fuji Five Lakes Area

I Looked Into HOSHIFULL DOME FUJI

A glamping facility on the shore of Lake Kawaguchi featuring 6-meter-diameter dome tents, all equipped with air conditioning/heating and humidifying air purifiers. Rakuten Mobile signal conditions came back as a C rating.

2026-08-25

Hakone Area

I Looked Into Madoka no Mori

This is a luxury hot spring inn in Hakone's Gora Onsen area, where all 20 rooms come with their own open-air bath fed by natural hot spring water. The Rakuten Mobile signal check came back as a C rating.

2026-08-25

Nasu Highlands Area

I Looked Into Nasu Auto Campground Green Base

This is an auto campground in Nasuyumoto with private paid workation rooms where you can use Wi-Fi. Rakuten Mobile's signal conditions couldn't be determined (the tool showed a maintenance notice).

2026-08-25

Nasu Highlands Area

I Looked Into Nasu Kogen ITAMURO Campsite

This is a camper-friendly spot for indoor types, with a flush toilet featuring a washlet, hot water showers, and even a private bath. Rakuten Mobile's signal came back as a C rating.

2026-08-25

Nasu Highlands Area

I Looked Into Ryokan New Otaka

This is a ryokan at an elevation of 1,300m where you can gaze at Mt. Chausu from what's said to be the highest open-air bath in the Nasu area. Rakuten Mobile signal conditions came back undeterminable (a maintenance notice was shown).

2026-08-25

Hakone Area

I Looked Into THE GLAMPING Hakone Jukkokutoge

This is a glamping facility on Hakone's Jukkokutoge peak, offering a choice of 7 room types including sauna-equipped suite villas. Rakuten Mobile signal conditions were rated C.

2026-08-25

Hakone Area

I Looked Into Yunosato Okada

This is a day-use hot spring facility in Hakone-Yumoto that draws on five of its own hot spring sources, offering 10 different types of baths each for men and women. Rakuten Mobile signal conditions came back as a C rating.

2026-08-25

Chichibu & Nagatoro Area

I Looked Into Forest Sounds Nagatoro

A campsite in Nagatoro that looks reachable even without a car. I looked into its facilities, which offer plenty of options beyond tent camping, like travel trailers and cottages. Rakuten Mobile's official tool didn't show a signal result, so the on-site Wi-Fi seems like it'll be the reliable option.

2026-08-24

Chichibu & Nagatoro Area

I Looked Into Seibu-Chichibu Ekimae Onsen Matsuri no Yu

A day-use hot spring facility directly connected to Seibu-Chichibu Station. I looked into how easy it is to get to for someone like me who doesn't drive, plus the Rakuten Mobile signal conditions (AAA rating).

2026-08-24

Chichibu & Nagatoro Area

I Looked Into Oyado Taketori Monogatari

Oyado Taketori Monogatari is an inn in Arakawa Uwadano, Chichibu City, limited to guests of middle school age and up. I looked into its all-inclusive style and its access on foot from the station. Rakuten Mobile's signal came back with a good "AA" rating on the official tool.

2026-08-24

Chichibu & Nagatoro Area

I Looked Into Seion no Yu

A day-trip hot spring facility located in Shimoyoshida, Chichibu City. I looked into its accessibility for someone like me who doesn't drive, since free shuttle buses run from major stations on the Chichibu Railway and Seibu Railway. According to Rakuten Mobile's official tool, the signal here got a somewhat modest "C" rating.

2026-08-24

Chichibu & Nagatoro Area

I Looked Into Splash Garden Chichibu Auto Campsite

An auto campsite in Chichibu with an onsen right on the grounds. I looked into its pricing, which is easy to understand since there's no high-season rate. Rakuten Mobile's signal got a good "AA" rating on the official tool.

2026-08-24

Chichibu & Nagatoro Area

I Looked Into Water Park Nagatoro

I looked into a campsite in Nagatoro that sits right next to the Arakawa River and also serves as a departure point for river-line boat rides and rafting. The official tool didn't show a signal result for Rakuten Mobile, so the on-site Wi-Fi seems like it'll be the more reliable option.

2026-08-24

Chichibu & Nagatoro Area

I Looked Into Wood Roof Oku-Chichibu Auto Campsite

An auto campsite tucked into the mountains of Otaki, Chichibu City. I looked into the facilities that offer Wi-Fi across every site. Rakuten Mobile's signal came back with a modest "C" rating on the official tool.

2026-08-24

Chichibu & Nagatoro Area

I Looked Into Nagatoro Auto Campsite

An auto campsite in Nagatoro, Saitama. I looked into the facilities—restrooms, Wi-Fi, and powered sites are all set up, with bungalow and glamping options also available. The official Rakuten Mobile tool didn't show a result for signal coverage, so the on-site Wi-Fi seems like it'll be the fallback.

2026-08-21