Relaxing — deep, immediate muscle release.
Rich in active gases or metals — a strong mineral character.
Soft water — natural, classic buoyancy.
Tachiyori Onsen Ito Kogen no Yu is set in Ito, Shizuoka Prefecture, on the Izu Peninsula known for its hot springs. Iron-rich, slightly acidic water (pH 6.3) rises at 42°C, feeding an indoor bath, an outdoor rotenburo, and a sauna.