We made the mistake of only staying one night, which was too short and didn't leave time to see the water fun park or go to Nakajima Island on the lake. There is a nightly fireworks show on the lake which was nice, Tahitian entertainment performances everyday, and wearing the yukata around the resort was also enjoyable. There is a very faint smell of chlorine (much less than a normal swimming pool), but no sulphur or other smells. The water is 38-40 degrees, which feels very hot but you adjust to it. The separate male and female onsens had a range of baths, including an outdoor one overlooking the lake. The buffet had a very good range of food in our opinion, for both dinner and breakfast, and the quality was good by typical buffet standards.

The room has its own small bathroom and a view of the lake, though the view is better elsewhere on the resort.

The Japanese style room was basic but comfortable, and housekeeping makes up the tatami sleeping mats at night. The resort is impressive with the glass-walled lobby overlooking the lake, though the onsen areas were a bit smaller than expected. The resort provided a bus service that picked us up from Sapporo for free, saving some money, though unfortunately it took over an hour longer than scheduled.

Toya sun palace resort & spa