We enjoyed the view of the lake from our room which was spacious and well supplied with a refrigerator, love seat and coffee table. The bed was hard and uncomfortable and would cause me to think twice about staying here again.
The onsen was very nice.
The swimming pool looked very fun with water slides however it is only open in the summer. The putt putt golf was an extra expense although it was on hotel property.
The dinner buffet wasn't worth the extra expense and we found we could eat elsewhere for a fraction of the cost.