Izukogen Area

I Looked Into Izu Kogen Onsen Hotel Mori no Izumi

2026-08-28

I Looked Into Izu Kogen Onsen Hotel Mori no Izumi

Besides campsites, I sometimes think it'd be nice to do a "hokansu" (hotel + vacation) stay at a hot spring inn, so on this blog I've been gradually looking into that kind of accommodation too, just in case.

This time I looked into Izu Kogen Onsen Hotel Mori no Izumi. The fact that it has two large communal baths available on an alternating schedule caught my attention, so I decided to dig into it a bit more.

The Short Version

You can enjoy two large communal baths, Mori no Yu and Izumi no Yu, on an alternating schedule, and apparently the water quality is the type known as "beautifying water," so it seems like a place that would satisfy you even if you're choosing it purely for the baths.
That said, the measured Rakuten Mobile signal came back as a C rating, so I'll be upfront about that.

I've summarized the details below.

What Kind of Place Is Mori no Izumi?

It's apparently a hot spring hotel located in the Izu Kogen area of Ito City, Shizuoka Prefecture. I was able to confirm on the official website that check-in is at 15:00 (last check-in 19:00) and check-out is at 10:00. Reservations can be made through the official website's booking system, and it seems phone reservations are also accepted.

As for room rates, based on the example plans listed on the official website's top page, a plan with dinner and breakfast starts at 14,300 yen per person, and an all-inclusive kaiseki plan starts at 18,700 yen. However, I couldn't confirm from the official site's text whether these prices include tax, so when actually booking, it might be a good idea to double-check on the final confirmation screen.

Komorin
Komorin

Seeing "all-inclusive" written on a pricing plan definitely catches my attention, but I couldn't quite figure out exactly what's included and to what extent. It seems like a good idea to inquire before booking.

The Two Large Baths and the "Beautifying Water" Quality

The biggest feature of this facility does seem to be the two large baths, Mori no Yu and Izumi no Yu, which are available on an alternating schedule. Mori no Yu apparently comes with a sauna and uses cold spring water that's heated, while Izumi no Yu has a natural wood tub and an outdoor bath, designed to double as a forest bathing experience. The bathing hours are listed as 6:00-10:00 in the morning and 15:00-24:00 in the afternoon/evening, so it looks easy to fit in a bath whether morning or night.

The water quality is apparently a calcium-sodium sulfate spring (weakly alkaline), with a pH of 7.84. It's colorless, transparent, and odorless, and is reportedly also known as "beautifying water," "wound-healing water," and "stroke-prevention water." While it's said to have benefits for neuralgia, muscle pain, cuts, and burns, conditions such as acute illness, high blood pressure, and pregnancy are apparently listed as contraindications, so if any of these apply to you, it seems worth checking in advance.

The "post-bath lounge" attached to the large baths apparently has free ice pops available in a fridge, which sounds like a nice little treat to enjoy after a bath.

Checking Out the In-Room Outdoor Baths and Lounge

Among the rooms in the VILLA building, three room types—the Japanese-modern twin, the superior twin, and the Japanese-style room—apparently come with their own outdoor bath. The Japanese-modern twin in particular seems to be described as "the hotel's most popular room." That said, these rooms apparently only have a shower booth and no unit bath, so that might be a point where opinions differ. I didn't find any mention of outdoor baths for the room types in the main building.

There's also a lounge exclusively for guests, open from 7:00-10:00 in the morning and 15:00-23:00 in the evening, apparently. You can enjoy beer, liqueurs, soft drinks, and snacks there, though alcohol service seems to be limited to the 15:00-23:00 window. There's also apparently a show combining a fountain and music held twice a day in the courtyard, which gives the impression that there's plenty to enjoy while relaxing at the hotel.

As someone who prefers staying indoors, I was also intrigued by the free-to-use facilities like a karaoke room and table tennis. Both apparently require signing up at the front desk, so if you want to use them, it seems best to ask after you arrive.

Meals: Izu Kaiseki Cuisine and a Sea Bream Breakfast

Dinner is apparently served as the "Izu Four Seasons Kaiseki Standard Course," a kaiseki meal using seasonal ingredients. Breakfast is Japanese-style, and the specialty dish highlighted is sea bream sashimi. You can apparently eat it as is, or pour dashi broth over it to make a chazuke-style dish, which sounds like a nice little indulgence first thing in the morning. There also seems to be a kids' plate available for young children. Both breakfast and dinner are basically served in the restaurant on the first floor of the main building, though private rooms are apparently also available.

Komorin
Komorin

Just imagining sea bream sashimi turned into chazuke is making me hungry. Since I'm not someone who drives, I'd also want to check on public transportation options or whether there's a shuttle service.

Rakuten Mobile Signal Conditions

Since this is the kind of trip where you spend a lot of time cooped up at the hotel, network connectivity is something I'm curious about. When I checked the location of this facility using the official "My Area Coverage Simulation" tool, the overall rating came back as "C."

To sum up that result as it is, depending on where exactly you're staying and how you plan to spend your time, it might be worth checking in advance. If you're planning to work remotely during your stay or watch videos, it seems like a good idea to check for yourself too. Also, there was mention that Wi-Fi is available in guest rooms and throughout the hotel, but I couldn't tell from the official site's text whether that includes common areas.

Komorin
Komorin

As a Rakuten Mobile user myself, a C rating is a bit of a concerning number. Along with checking how far the in-house Wi-Fi coverage reaches, I'd like to reach out to the hotel directly at some point.

A Quick Look at Nearby Attractions

According to the official website's access and nearby sightseeing page, Lake Ippeki, sometimes called "the eye of Izu," is about a 5-minute drive away, and Mount Omuro, known for its gentle mountain shape, is about a 13-minute drive. Other spots such as Jogasaki Coast, Mount Komuro, Shiofuki Park, and the Matsukawa area are apparently introduced as being roughly 20 minutes away by car. I couldn't find specific restaurant names for nearby dining on the official site, so it seems like something worth asking about locally during your stay.

Wrapping Up

To sum things up again, my overall impression of Izu Kogen Onsen Hotel Mori no Izumi is a place where you can enjoy two large baths, Mori no Yu and Izumi no Yu, on an alternating schedule, with a water quality described as "beautifying water." I also got the sense that there's plenty of effort put into making time spent at the hotel enjoyable, from the in-room outdoor baths in the VILLA building to the fountain show and the lounge.

The Rakuten Mobile signal conditions came back as a C rating, so if network connectivity is a priority for you, it might be reassuring to check in advance. If you're curious, you can check using Rakuten Mobile's official tool, so it might be worth taking a look before booking.

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