Lined with blue Awa stones. All walls are glass, through which one can see the Iya Valley’s lush virgin forest. The large bath includes a jet bath, bubble bath, and hot water beds.


Open-air bath that combines blue Awa stones. You can enjoy the beautiful nature of the secluded Iya Valley’s four seasons.
The water is from a hydrogen carbonate spring, similar to the Large Bath.
The Japanese version of the rejuvenating sauna. It takes advantage of the ocean’s wide-ranging effects: its germicidal power, dehydrating power, reviving power, among others. It also promotes metabolism. Its moxibustion-like effects are good for labor pains and neuralgia. Furthermore, it is a powerful beauty treatment that moistens and freshens skin.


Promotes heat retention. Good for treating coldness due to poor blood circulation, low back pain, stiff shoulders, and neuralgia.
Its protein-breaking enzymes promote soft skin. Furthermore, its various vitamins and chlorophyll are effective for treating sweat and skin problems such as rashes.
Spring quality and efficacy
Iya Hot Springs are considered one of the three major hidden hot spring spots in Japan along with Niseko Yakushi Hot Springs in Hokkaido and Yachi Hot Springs in Aomori prefecture. Its white, cloudy appearance is caused by minerals floating in the water. Its sulfurous and alkaline water creates smooth and beautiful skin.
- Water Characteristics:
- Water Characteristics: Alkaline simple sulfur hot spring containing metaboric acid, etc. (low-toxicity alkaline hot spring)
- Efficacy:
- Hydrogen carbonate hot springs promote smooth skin. Effective for neuralgia, muscle pain, joint pain, fatigue, and coldness due to poor blood circulation, bruises, cuts, arteriosclerosis, chronic skin diseases, women’s diseases, skin care, and as a beauty treatment.
How It Works
Bathing Fee | General Adult | 1,000 yen |
---|---|---|
General Child (Elementary School Students) |
500 yen | |
Group of Adults | 900 yen | |
Group of Children | 450 yen | |
Business Hours | 10:00 to 21:00 (Hotel Guests: 15:00 to 23:00, 6:00 to 8:00) | |
Closed | Tuesdays (in the case of a public holiday, Wednesday). Hotel guests may use the hot springs from 17:00 on Tuesdays. |