This hotel was my favourite experience in Japan. The most striking feature is the view of Lake Kawaguchi upon entering the room. The room is also spacious and you are supplied with a yukata to wear inside the hotel. This adds to the experience of immersing yourself in the culture. The whole hotel can only be navigated in the supplied house slippers (shoes left in lobby).
The parts that stood out to me was the food we had for breakfast and dinner (half-board). I always left too full to move! The food was supplied to the table, but you could also grab food from the buffet. It was a feast.
The onsen was also fantastic. However, I went when the hotel wasn't busy (December) so I always had the onsen to myself. The massage chairs and cold tea was a good touch.
The staff are very friendly with sufficient English.