- THE SPA Seijo's natural hot spring is a hydrogen carbonate hot spring that wells up from 1200 meters underground."Kuroyu", which is a feature of Tokyo's natural hot springs, contains abundant minerals from ancient seaweeds and plants dissolved in the strata.The smooth, weakly alkaline hot water is gentle on the skin and is known for its high heat retention and moisturizing effects.Please enjoy the deep and beautiful black water to your heart's content.
*The natural hot springs at this facility are heated from the source, and partly uses a filtration circulation device. (The open-air “Tsuboyu” is a free-flowing hot spring that does not use a circulation device.) - Tsuboyu (Natural hot spring flowing directly from the bath)
Tsuboyu in the open-air area can enjoy natural hot springs.
If you soak yourself in a pot dedicated to one person, the natural hot spring will overflow vigorously.
- Outdoor bath
Of course, the open-air bath is also a natural hot spring.
Please enjoy the leisurely flow of time.
- Indoor bath
THE SPA boasts a spacious relaxing space.
Please enjoy the beautiful black hot spring.