We stayed one night here as part of a packaged tour. The tatami room was adequete albeit rather small, but the onsen was really great. When we first went to the onsen, thought it smelled, but later realized its just the sulphur pool. The pools at basement 1 and 2 alternate for men and women. The night we were there, the B2 pools were for women and it was fantastic. The outdoor pools were really nice (even though it was a freezing -10 degrees C outside) and there was even slides for adults and children. They switch pools at 4am in the morning, and my sis in law went to check out the B1 pool to find it way smaller, and not as fun. If you only have one night there, and did not get the chance to check out the pools at B2, suggest that you wake up earlier the next day to try out the pools there. The dinner buffet was nice with a good variety, but not particularly wow'ed. A must try is the noodles.