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- Suu Onsen Touji no Yado Ryuou Radon Onsen Hotel Yuutopia
Suu Onsen Touji no Yado Ryuou Radon Onsen Hotel Yuutopia
Yamanashi Prefecture／KaiA therapeutic Accommodation renowned for its radon Onsen. Ranked No. 1 nationwide in the “Best Hot Spring Water” category in the Nifty Onsen Ranking 2023.
Since its opening in 1980, we have cherished and preserved the medicinal Onsen known as "The Best Radon Onsen in the East." This extraordinary hidden hot spring is located in Kai City, Yamanashi Prefecture, where you can still enjoy the radon Onsen just as it was when it first opened. While it may lack modernity and pristine aesthetics, the spring water has remained fresh and unchanged for over 40 years. Awarded second place nationwide in the Health Promotion category of the 2022 Onsen General Election. It is a genuine 100% pure flowing Onsen, said to account for only 2% of all Onsens across The whole country.
This was my first time staying here.It was about a 15-minute walk (at a relaxed pace) from JR Chuo Main Line Ryuo Station.There is a 7-Eleven along the way.There are several chain restaurants near the Accommodation.Both the Accommodation and its Facilities have a retro Showa-era feel, but the free-flowing natural hot spring water is wonderful.There are two indoor baths; in one of them, you can soak while breathing in radon and ozone.There is also a separate cold-water bath, with continuously flowing water as well.The baths are available all night, but close at 8:30 AM, so be sure to take your morning bath early.The Room toilet has a washlet bidet seat.I had a very relaxing stay.After work, I took the limited express from Tokyo Station (the 6:15 PM Kaiji bound for Ryuo) and arrived in about two hours with no transfers.I would love to stay again if I have the chance.
Yahoo!トラベルユー... 4/8/2026A worry-free Accommodation full of Showa-era charm and retro vibes There are several restaurants within a 5-minute walk, so you won’t have trouble finding somewhere to eat, and the Accommodation’s signature Onsen has silky-smooth water that keeps you warm even after your bath. Next time, I’d like to book a Multiple Night Stay and really enjoy the baths.
Yahoo!トラベルユー... 4/18/2026
Facilities and Services
See All- Hot spring
- Accessibility
| IN | 15:00～24:00 |
|---|---|
| OUT | 10:00 |
| Number of rooms | 35 rooms |
| Your child | Permitted |
| Pet | Not allowed |
| Only guide dogs and assistance dogs are allowed. Please bring your own mat or similar bedding. |
Photo
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- Japanese-style Room
- Capacity 1~3 people
- Twin
- 16㎡
- Capacity 1~2 people
- Double
- 1㎡
- Capacity 1~3 people
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Introduction of the Accommodation
Basic Information
| Card information | VISA / MASTER / JCB / AMEX / DINERS |
|---|---|
| Pets | Not allowed Only guide dogs and assistance dogs are allowed.
Please bring your own mat or similar bedding. |
| Breakfast | There is no information about breakfast. |
| Your child | You can stay. Children of elementary school age and older are charged the same rate as adults.
When using a Japanese-style room, for children under 3 years old and preschool children, an additional Child Sharing Existing Bedding Facility fee of JPY 3,300 will be charged.
When using a Western-style room, children below preschool age are not permitted. |
| Room service | Not available |
| Common amenities |
|
| Facilities and Features |
|
| Esthetic Massage | None |
| Fitness gym | None |
| Public Bath |
|
| Spring quality and benefits | Sulfur and bicarbonate spring Neuralgia, muscle pain, joint pain, frozen shoulder, motor paralysis, joint stiffness, bruises, chronic digestive disorders, hemorrhoids, sensitivity to cold, recovery after illness, hypertension, arteriosclerosis, cuts and wounds, burns (hydrogen sulfide type), chronic skin conditions (hydrogen sulfide type), chronic gynecological conditions (hydrogen sulfide type), diabetes (hydrogen sulfide type), gout (hydrogen sulfide type), chronic cholecystitis (hydrogen sulfide type) ※Regarding the notation of "Gensen Kakenagashi" |
| Sauna | None |
| Hot stone spa | AvailableAlthough it is not a hot stone spa, there is a radon inhalation room. You can safely inhale radon gas at the highest concentration. It promotes sweating even more than a sauna. |
| Others | Other accepted cards UC, DC, NICOS, UFJ, and Saison *These may differ from the credit cards available for Online Credit Card Payment. *For some Plans that clearly state they are not eligible, credit card payment is not available. Please check the details shown for each Plan. |
| About Hygiene Measures | Yutopia’s Key Measures and Requests to Guests
1. Additional alcohol sanitizer stations
We have placed sanitizer at the front desk and other areas to make it easier for guests to use.
2. Enhanced regular disinfection
We regularly disinfect high-touch areas such as doorknobs, doors, escalator handrails, elevator buttons, and restroom doors with alcohol-based disinfectant.
3. Wearing masks during guest service
To protect guests’ health and safety and support public hygiene, our service staff wear masks and other protective equipment.
4. Improved ventilation in the building
To enhance ventilation, we may periodically open doors and windows in public spaces. Thank you for your understanding.
5. At check-in
At check-in for your stay, we ask guests to undergo a temperature check and use alcohol sanitizer.
We may also ask about your travel history and any places you visited before arriving at the Hotel.
6. Enhanced disinfection in guest rooms
To ensure a safe stay, we have strengthened disinfection procedures in guest rooms.
7. Dining hall / banquet hall closure
For the time being, dinner and breakfast are available only for the Reserver.
8. Enhanced sterilization in the lobby
To help you feel at ease, we have strengthened ozone ion sterilization on the 1st-floor lobby level that all guests pass through. |
Reviews
- Rooms & Amenities3.65
- Facility3.53
- Hospitality & Service4.18
- Meals3.25
- Onsen & Bath4.71
- Satisfaction4.06
*Reviews that have been translated from Japanese.*
*Showing only reviews from 一休.com (Japanese) and Yahoo!トラベル.*
Access Information
Yamanashi Prefecture1300-1 Tomitake-Shinden, Kai City
TEL：+81-55-276-9111
A 10-minute walk from JR Chuo Line Ryuo Station. Located 2 km west of the Chuo Expressway Kofu-Showa Interchange, along National Route 20.
- Parking Information
- Fee
- Free for guests
- Parking time
- ---
- Parking space
- No restrictions
- Number of parking spaces
- 400 cars available outdoor
- Valet service
- Unavailable
- Pickup and drop-off information
- Unavailable
Frequently Asked Questions
What kind of facilities and features are available?
There are the following facilities and features. Hot spring・Free-flowing hot spring・Large public bath・Ganbanyoku (rock bathing)・Barrier-free
I would like to know the access information.
A 10-minute walk from JR Chuo Line Ryuo Station. Located 2 km west of the Chuo Expressway Kofu-Showa Interchange, along National Route 20.
Is parking available?
・Fee： Free for guests ・Parking space： Length --- Vehicle width --- Vehicle height --- ・Number of parking spaces： 400 cars ・Valet Service： Unavailable
Is an internet connection available?
Connection is possible. ・Wi-Fi is available. For more details, please refer to the room and plan information.
Do you have a rock bath?
Yes, there is. Although it is not a hot stone spa, there is a radon inhalation room. You can safely inhale radon gas at the highest concentration. It promotes sweating even more than a sauna.
What kind of hygiene management is being conducted?
Yutopia’s Key Measures and Requests to Guests 1. Additional alcohol sanitizer stations We have placed sanitizer at the front desk and other areas to make it easier for guests to use. 2. Enhanced regular disinfection We regularly disinfect high-touch areas such as doorknobs, doors, escalator handrails, elevator buttons, and restroom doors with alcohol-based disinfectant. 3. Wearing masks during guest service To protect guests’ health and safety and support public hygiene, our service staff wear masks and other protective equipment. 4. Improved ventilation in the building To enhance ventilation, we may periodically open doors and windows in public spaces. Thank you for your understanding. 5. At check-in At check-in for your stay, we ask guests to undergo a temperature check and use alcohol sanitizer. We may also ask about your travel history and any places you visited before arriving at the Hotel. 6. Enhanced disinfection in guest rooms To ensure a safe stay, we have strengthened disinfection procedures in guest rooms. 7. Dining hall / banquet hall closure For the time being, dinner and breakfast are available only for the Reserver. 8. Enhanced sterilization in the lobby To help you feel at ease, we have strengthened ozone ion sterilization on the 1st-floor lobby level that all guests pass through.