When it comes to high class Japanese amenities, there is a sliding scale of quality, with the nearby sister hotel Shinyu just one step below Sui Suwako. This place is excellent, and I mean it. It might even be too fancy for your tastes if waiting for someone to retrieve your shoes before you go out makes you anxious. But if you're looking to relax and have a table side dinner and breakfast prepared for you, and if you like spacious rooms and private onsen, you will enjoy staying here. This is the pinnacle of Japanese comfort and accommodation in Kamisuwa.
Oh, and when you're leaving? They'll even provide a free car to take you to the station.