Dormy Inn Niigata

A Dormy Inn hotel in central Niigata with separate large baths for men and women, on the 10th and 2nd floors. The indoor baths are filled with natural spring water carried in from Iwamuro Onsen (岩室温泉). The open-air bath uses plain tap water and is on the men's side only; the women's side has a semi-open pot bath instead. Men also get a dry sauna and a cold plunge, women a nano-mist sauna. The hotel has a cave bath (洞窟風呂), which it says is the only one in the Dormy Inn chain, and a reviewer mentions the water jets. Baths are for staying guests only, with no day use (日帰り入浴), and tattoos are not allowed. The bathing areas were renovated in April 2025.