I picked this hotel because it was one of the cheaper onsen hotels in the area. It was waaaay beyond my expectations, given the price I paid, and worth every yen.
Like most other onsen hotels, our stay was in a Japanese style room, including dinner and breakfast. I love the interior decor of the hotel - there were paintings and mini zen gardens incorporated at the lift lobbies and along the hallways. Very charming! Even the doors to the hotel rooms were painted and lacquered Japanese style! I'd have to say the room was pretty average for an onsen hotel.
The meals were buffet style and there was a good assortment of dishes. I love the restaurant where breakfast was held. Very atmospheric, with wooden bridges over running water and private Japanese style rooms. The only downside was breakfast was a bit too early for my liking (7-8am).
Onsen was fantastic. There is a jacuzzi and I love the temperature! Not too hot or too cold. The outdoor bath was really cute too, with large wooden tubs that can fit 2 people comfortable. The price we paid also included a private bath which was located in a very sleek and modern room.
Location wise, it may seem relatively further from "downtown" than the other hotels, but it really is just a 5mins walk away and a 10mins walk to Hell Valley. Also, if you walk AWAY from downtown to the back of the hotel, there is a path leading to Onuma and along the way, you can enjoy a foot bath in the natural hot water stream.