Seems like a family owned and run place. Off peak season when I visited and the public Onsen essentially became a private one. No locals seen, only foreigners guests
The hotel’s meals are good, we stayed for 2 nights and they offered different kind of Japanese cuisine on different days. The onsen is good, they provide private onsen for use where you could pick the key and use for 1 hour. I enjoyed the public onsen all by myself and kids during my 2 days stay.