With a family of 6 (4 children), we had a comfortable stay at this hotel. There were a double decker bed and 5 tatamis. The room also had a stove. If you intend to cook, you need to inform the hotel. No plates, pots or cooking utensils provided.
Pros: Spacious, warm, comfortable, great hotel facilities (including hot bath, game room, laundry etc)
Cons: maybe this is an isolated case, but our toilet was somehow smelly, even before it was used.
Unfortunately when we were there, ski season had not opened so we couldn't rent any ski equipment. But the kids still enjoyed playing in the snow.