SOIL Nagatoyumoto (SOIL Nagatoyumoto)
SOIL is the only operator in Nagato-Yumoto that says yes, and it says it in English as well as Japanese. Its sauna takes tattooed bathers; the one exclusion it draws is irezumi in the traditional Japanese style, which it refuses by name. The sauna is worn with swimwear, rentable for a fee, and it is open to people who are not staying. The line applies to the sauna, not to a hot spring bath, because the building does not run one.
タトゥーの方はご利用可能ですが、刺青(和彫り)のある方はご利用をお断りさせて頂いております。
Best for: A sauna on the river that says yes to tattoos in writing, in a town whose bathhouse says no.
Sauna is 1,500 yen on its own and free to hotel guests; 2,000 yen buys the sauna plus an Onto bathing ticket, which is worth ignoring if the Onto rule applies to you. No booking is needed for the sauna, except that 13:30 to 15:00 can be reserved as a private session by phone or email. Swimwear rents for a fee. 24 rooms, from a BOX single at 9,570 yen a bed to a river-view twin from 37,840 yen. The property calls its idea the three educations: nature, food and bathing.