Nothing fancy, no views, but very clean and well maintained onsen. Very popular with locals. We were greeted at entrance, the pamphlet about bathing etiquette was handed to us, very helpful. Hot indoor pool quite big in size, no smells.There was also a cold bath. Outdoor pool smaller for some 4-5 people at most. Rest area to sit and relax afterward. We took a taxi back to Matsumoto as no bus service later in the evening, had to wait for it some 15 mins, ¥2000.
Great experience.