A really old-fashioned Japanese onsen experience like nothing else. We ate in the Japanese restaurant one night and French the other evening. The food was fantastic. Rooms were comfortable but old fashioned. I would highly recommend the room with a private onsen - we saw tanuke (Japanese raccoon dogs) approach whilst we were bathing which was a really special experience. We hiked to the ridge (5 hours return) through a beautiful forest.
The staff are wonderful. Everyone worked so hard to make sure that our stay was great. We have a vegetarian and they went out of their way to make sure that he had special meals every time.
Amazing experience, the all Onsen staff went the extra mile to make our stay the most pleasant possible. The water quality is great and the rooms are really nice and spacious. Food is at great level especially the French restaurant. Breakfast were among the best we ever experienced. The mountain area offers good choice for great walk and the nearby Matsumoto city is a gem with lots of interesting small shops to discover and a great selection of eating places of various topologies.