I came here during summer for Fuji Rock. In all honesty, it’s alright, the room is clean & the beds were comfortable, aircon works. Don’t expect much from the room, as there’s only 1 power socket in the room, so we had to share. It’s really just for sleeping.
The shower is an open bathroom common in Japan & shared toilet situation, so just take note for travellers who aren’t comfortable for that kind of thing. But the good thing is that the shower area was clean, water is hot & great. Towels are provided although it’s a really small and thin one.
There’s a free large area for parking near the place so that’s good. I’d think it would be great for winter as it’s right next to the gondola, but we didn’t experience that.