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

On this blog, I've been researching various places to visit whenever the mood strikes to think, 'Let's skip camping today and do a hotel staycation instead.' This is part of a series where I look into the relaxation facilities at hot spring ryokans and hotels, together with the Rakuten Mobile signal conditions there.

What caught my attention this time was Tensei-en in Hakone-Yumoto Onsen. I came across mention somewhere of a large open-air bath on the rooftop, and even as an indoor type, I thought 'surely I could manage just looking at an open-air bath,' so I decided to look into it.

A Ryokan with Plenty of Bathing Options: The Sky Open-Air Bath and Private Baths

Apparently, Tensei-en is a hot spring ryokan you can reach from Hakone-Yumoto Station either on foot or by shuttle bus or taxi. It seems the property has as many as four of its own hot spring sources, and the rooftop "Sky Open-Air Bath" is built around a circular tub roughly 17 meters across, letting you take in the seasonal scenery. The water is said to be a simple alkaline spring, known for feeling gentle on the skin.

Day-trip bathing hours run for quite a stretch, from 10 a.m. until 9 a.m. the following morning (with the last entry at 10 p.m.), and on top of the standard admission fee, there seem to be time-based options like a two-hour package or morning/evening bath rates. Since yukata and towels appear to be included in the admission fee, it looks like you wouldn't run into trouble even showing up empty-handed.

Komorin

The pricing seems finely divided—morning bath, evening bath, even a late-night surcharge—and just researching it made me feel like there'd be a certain fun in putting together a bathing schedule. Not that I actually plan to make one myself.

Checking Out the In-House Facilities That Caught My Indoor-Type Eye

Personally, what caught my attention most was that there are as many as 12 private bath rooms on the 6th floor. Each room reportedly costs 2,200 yen for 60 minutes, and it seems guests staying overnight need to apply at the front desk after check-in (a separate day-use admission fee is apparently required as well). You apparently can't choose which tub you get—it's left up to the facility—but they seem to lend out baby baths and bath chairs for children, which struck me as a thoughtful touch for families.

• Sauna: There appear to be two types—a dry sauna (around 95°C for men, 90°C for women) and a mist sauna (around 43°C)—along with a cold plunge bath.
• Rest areas: Besides the free dining and rest lounge on the 2nd floor, there's also a relaxation room (nap room) usable until 8 a.m. the next morning, which could work almost like a simple overnight stay.
• Food: There's the rest lounge for day-trip visitors, plus a lunch buffet restaurant (2,600 yen for adults), and dinner for overnight guests is apparently served as a Japanese, Western, and Chinese buffet.
• Other amenities: A gift shop, an in-house convenience store, an esthetic salon, a game corner, and a bar lounge—overall it gives the impression that you could spend your whole visit without ever needing to leave the building.

The grounds also apparently include a couple of waterfalls known as power spots, plus a small shrine dedicated to a matchmaking deity and a foot bath, so wandering the grounds in a colorful yukata seems to be part of the fun. That said, outside food and drink are prohibited, and guests with tattoos (including tattoo-like stickers) can't be admitted, so it's worth double-checking the usage rules carefully.

As for room rates, general search results suggested weekday stays with two meals starting around 15,000 yen, but I couldn't find a concrete price list on the official site itself. It's possible pricing only shows up once you search for a plan with specific dates and number of guests, so it seems safest to confirm the exact amount when booking.

Getting There: On Foot, by Shuttle Bus, or by Taxi

From Hakone-Yumoto Station, it's about a 12-minute walk along a route that follows the Sukumo River. If walking sounds like too much, you can apparently catch a shuttle bus that loops between ryokans from the station's roundabout and just tell the driver you're headed to Tensei-en—it takes about 5 to 7 minutes (200 yen for anyone from junior high age up). That said, the service is currently running fewer buses, and there seem to be gaps in the schedule depending on the time of day, so if you're planning to use it, it's worth checking the latest timetable in advance. By taxi, it's said to take around 3 to 5 minutes.

If you're driving, there's on-site parking for 170 cars, and it's apparently free for up to 5 hours for day-trip visitors. Setting a phone number into your car navigation system can reportedly point you to the wrong location, so it's recommended to search using the waterfall's name instead. Reservations can be made either through online booking on the official site or by phone.

Rakuten Mobile Signal Conditions

When I checked this facility's location (the Yumoto area of Hakone-machi, Ashigarashimo-gun, Kanagawa Prefecture) using the official "My Area Network Simulation" tool, the overall rating came back as a "C."

Maybe because of its location tucked into the mountains of Hakone, it seems like a good idea to check the signal situation ahead of time. If you're planning to take photos on your smartphone or share them on the spot while soaking in the open-air bath or strolling the garden, keeping this rating in mind beforehand might make it easier to plan around.

Komorin

Honestly, a "C" rating is a bit disappointing to see. I use Rakuten Mobile myself, so whenever I come across a result like this, I can't help wondering what it'd actually be like if I went there. Not that I'm actually going, though.

Wrapping Up

To sum up, Tensei-en left me with the impression of being a ryokan with plenty of bathing options, from the open-air Sky Bath fed by its own natural hot spring source to 12 private bath rooms. Between the sauna, free rest lounge, and day-trip plans that include yukata rental, there's a lot here that seems comfortable even for indoor types like me. As for Rakuten Mobile, the signal came back with a "C" rating, so if connectivity matters to you, it might be reassuring to check before your visit. If you're curious, you can look it up yourself using the official Rakuten Mobile tool, so give it a try.

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Related Links

• Official Site