Excellent location in the national park. Brilliant outdoor hot spring at the hotel, with some smaller ones off in the forest. Suggest going mid-week in the fall when there are fewer people. Arrange for your meals on advance with the hotel. Definitely go for the evening set meal, which is fantastic. (And they are happy to adjust for your diet.)
If you are lucky, a fox will visit with you in the hotsprings.
Excellent, helpful staff.