Very nice and great size open air onsen and balcony in the room, the only problem is that you can't change water yourself as the drain of the tub seems to require a key to open. Once the whole tub turned cold, we can only keep adding new hot water in, but this will result in having cool water on the bottom of the tub and hot water on the surface. Another thing is hotel is next to train track, so beware of noise level if you mind, but it was not that bad anyway.