Oizawa Onsen Ryokan

A small toji (湯治, long-stay soaking) inn in the Nishiyama onsen area of Yanaizu. The bathhouse is simple: three tubs and a small shrine facing them, with brownish, clear water that has flakes floating in it. Visitors describe bathing as mixed, with one shared changing room, and no washing area, so you rinse well and get in. The inn is meant for soaking first, with self-catering stays as the basic idea and meals as an add-on. Sources disagree on whether it is running right now: a town tourism listing and some recent reviews report it closed, so call ahead before planning a trip.