Kiunso
寛ぎの宿 輝雲荘
Kiunso publishes no tattoo rule, so its two shared baths stay unanswered. The family bath, Nagomi-no-yu, is free to guests and used by one party at a time, which makes it the practical answer here. It cannot be reserved in advance: the key sits at the front desk until 23:00 and the inn suggests phoning down to check whether it is free. Day visitors who are not staying can rent that same bath, and only that bath.
Note: The family bath and the open-air bath are ceramic-mineral water on a recirculating system, not the spring; only the indoor part of the large bath is natural spring water. The inn says so itself.
Best for: A traveler who wants a private tub at no extra charge in a town with almost no private bathing
Read the water carefully here. The inn writes that Yunotsu’s supply is not plentiful, that only the indoor part of the large bath is natural spring water on free flow, and that the open-air bath and the family bath are ceramic-mineral water on a recirculating system. So the private tub is warm water, not the spring, and the inn says so itself. Day-use of the family bath costs ¥500 for an adult, ¥300 for a primary schooler, ¥200 below that and nothing under three. Kiunso also lets two old houses on the street, Seisenkan and Hosen Nagaya, whose guests walk to the main building to bathe.