Small and cozy room. Very clean. Bathroom with bathtub. Pillow and bed very comfy.
Single rooms were located in another building, not with the main one where the onsen is. But it's just a 1min walk.
Onsen very small but no crowd. 2 types of onsen. One open air and the standard kind.
Open air was just a big window, not really open at all. Was the only one using it, a lot of privacy.