Welcome to Ryuo Radon Onsen Utopia,
one of Japan's leading radon hot springs
with a Showa retro atmosphere!

About 2 hours from Tokyo. The hotel is located in Yamanashi Prefecture where there are abundant nature and Mt. Fuji.
The inside of the hotel has a nostalgic Showa retro atmosphere, but it also has hot springs with one of the best therapeutic effect in Japan.
Please experience our hot springs that relive your fatigue and restore your physical and mental health.


Yamanashi Prefecture is a treasure trove of magnificent natural scenic spots.

Yamanashi has magnificent nature and historical highlights, such as Mt.Fuji, the symbol of Japan, Arakura Fuji Sengen Shrine, where you can see Mt. Fuji, cherry blossoms, and autumn leaves all together, and Shosenkyo, which is said to be the most beautiful valley in Japan, where you can enjoy the scenery of the four seasons up close.

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  • Arakura Fuji Sengen Shrine
  • Mt. Fuji and Lake Kawaguchi
  • Shosenkyo Gorge

Japan's top-class
radon hot springs
for health

Our hot springs have been selected as one of the 100 best hot springs in Yamanashi, and are the ultimate hot springs for health. You can enjoy the natural hot springs that have been carefully protected since its opening in 1980, and the fresh radon hot springs born from a radon generator.
Our hot spring water has been constantly coming out as it has for the past 50 years, and flowing directly from the source. It is said that only 2% of the hot springs in Japan are 100% natural hot springs. Please feel the difference from circulating hot springs.
Radon Onsen is called inhaling hot spring, and it has a sweating effect more than a sauna, allowing you to experience radon therapy.
Relieve your day-to-day fatigue at our ultimate hot springs.

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about radon hot springs

  • radon hot springs
  • radon hot springs

Health tourism to relieve fatigue and become healthy and beautiful.

We are not only promoting tourism services, but also promoting services based on the concept of health care.
By using aromatherapy in combination with hot spring and radon therapy, we offer a synergistic effect that exceeds expectations and a quality way of spending time that can heal your body and mind.

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on health tourism

  • health tourism
  • health tourism
  • health tourism

Hotel facilities
with a nostalgic
Showa retro atmosphere

hotel facilities

  • hotel facilities
  • hotel facilities
  • hotel facilities
  • hotel facilities

Our hotel is a hot spring facility that has been in operation since 1980, where you can enjoy the Showa retro atmosphere.
Guest rooms are located on the 3rd to 5th floors. We offer a variety of guest rooms from relaxing Japanese-style rooms to western-style rooms with twin beds.
All rooms have free Wi-Fi Internet access.

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information on the
hotel facilities

  • guest rooms
  • guest rooms

Delicious cuisine using seasonal ingredients

For meals, we offer Kaiseki cuisine using carefully selected ingredients according to the season.
There are plans that use high-quality ingredients from Yamanashi Prefecture, including the local brand salmon "Fuji-no-suke" and plans that reduce the number of items that can be served to the elderly.

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Facility Information

15:00 (last check-in 24:00)
Free Wi-Fi
Available in all rooms.
Total number of guest rooms
35 (15 Japanese-style rooms and 19 Western-style rooms)
Hotel facilities
Restaurants, banquet hall, public baths, shops, vending machines, coin laundry, game corner, table tennis
Free parking for 100 cars available (large vehicles can also be parked)
Room facilities
TV, air conditioning, telephone, kettle, tea set. refrigerator, soap, all-in-one shampoo, toothbrush set, towels, bath towels, Yukata, slippers
Borrowable items
Hair dryer, trouser press, desk lamp, iron
Language Support
Chinese speaking staff or a translator will assist you.
Credit card
VVisa, JCB, American Express, Diner's Club, Master Card
Note: Not available for tax and surcharges.
Cancellation fee
9 days before date of stay: 20% of room rate
1 day before date of stay: 80% of room rate
On date of stay/No-show: 100% of room rate