Okajima Hot spring Inn

Okajima is a small, family-run ryokan in Yoshioka Onsen, a hot spring town on the shore of Lake Koyama. It has two baths, a rock bath and a cypress bath, fed by kakenagashi (かけ流し) spring water that runs fresh rather than being recirculated, and guests can use them any time through the night. Reviewers mention the bath floor is lined with black stone, said to be a touch particular to Yoshioka Onsen. The building itself feels old in a good way, and guests often describe the proprietress as especially attentive. The ryokan only takes a small number of guests at a time, and its home-style meals come up again and again in reviews.