Very average. The room is overpriced but that's common for Japanese style onsen hotels. But despite the price, room amenities and housekeeping service are very basic.
Onsen bath is nice but quite small. It's awkward even to fit 4 people inside.
One highlights is the staff, very helpful, especially the gentleman at the ski rental place, very warm service.
Dinner is also very good and priced fairly (¥3,300 per person for a set menu with a choice of either hot pot, sukiyaki or yakiniku)
The resort is right by the slope so it's perfect to ski. But be careful, the entrance is very tricky. Because of the snow my car struggled to reach the parking and after, we had to walk up the stairs on slippery snow for a few minutes. With a luggage, it's a real struggle.