Service staff were efficient, although queueing to trade your keys for your shoes slowed things down. (Understandable, because this is also a day-trip onsen, so the hotel needs to ensure all tabs are covered before letting guests go.)
Facilities were old but well-maintained, although my room window couldn't be closed without force. Wide variety of baths to choose from, and convenient hours.
Note that there is no shampoo, conditioner or body soap in guestrooms, as this is an onsen facility - all soaps and bath amenities are provided in the onsen area.
Several onsite restaurants providing many food options, which made up for the lack of vegetarian-friendly options around the area.