Iwamuro Onsen
Natural hot spring water transported from Iwamuro Onsen in Niigata Prefecture. It has a characteristic salt membrane feel of chloride springs, offering high heat retention. Enjoy a variety of baths including indoor baths, open-air baths, pot baths, and cave baths. The water feels soft, clinging to the skin. After bathing, you are less likely to feel chilled, as your body warms from the core. The high salt concentration is expected to help improve muscle pain and cold sensitivity. The cave bath offers a unique atmosphere for an extraordinary bathing experience.