We loved our stay at the Asante Inn. The staff was incredibly accommodating, and very helpful with local recommendations.
We had a private room for 2 (picture included), as well as a single bed in the female dorm (for my sister-in-law). We all opted for the Japanese breakfast each day, which was prepared beautifully and was fantastic. Our room was on the lower level, right next to the mini workout area (a stationary bike, as well as some other machine), which had a massage chair. The massage chair was incredible, and much needed after a long day of hiking.
We loved the private onsen with signups. They have a left (larger) and right (smaller) onsen which can be both be reserved in 40 minute increments using a signup on the main floor. Signups are for 16:00-22:30 (8 signups, 2 onsens, so 16 different reservations a day). The onsens can be used on a first come first served basis in the mornings as well.
We also went to a local japanese restaurant near the bottom of the hill (not far from the bus stop) which was an incredible experience within a few minutes walking from the hotel.