Isawa no Sato

The bath setup is straightforward for a countryside ryokan: a large indoor tub with jets, a sauna, a cold plunge, and an open-air bath that looks onto the garden. Day-use bathing is open to non-guests too, not just people staying the night. The building carries the name Igidani Onsen (生谷温泉), but the front desk will tell you plainly that the water isn't a natural hot spring. Rooms are simple tatami, several facing the Isawa river and the hills around Shiso. Dinner is a set course built around local ingredients and fermentation, and the kitchen also runs hands-on sessions such as soba-making, konjac, and jam, using produce grown nearby.