"Kakureyu no Sato Shingenkan" is a hot spring inn in Nakagawa Onsen, Yamakita Town, Ashigarakami District, Kanagawa Prefecture. Known as one of Takeda Shingen's secret baths, the water gushing from the self-flowing spring on the property is a simple hot spring with an extremely high alkalinity of pH 10.1. With its astonishingly smooth, silky texture, it is called the "beauty bath," and drinking the spring water may also help improve stomach and intestinal ailments. The large public bath, Mugen no Yu, is equipped with a sauna, and the open-air 전망露天風呂 overlooking the clear stream of the Nakagawa River, along with three charming private baths that can be used free of charge even late at night, are all available.