The location is out of the way. If you don't drive, you need to watch the bus schedule (and buses are infrequent). The hotel is dated, so don't expect a super clean feel to it, but I am convinced there is no actual issues with cleanliness, just things look old. SInce there are only two floors, there is no elevator. For those with heavy luggage, please be aware you will have to bring these up yourself. The onsen was a pleasant surprise. I normally like the outdoors one more, but the ones indoors have a jacuzzi-like effect added. Personally, I feel it makes the onsen experience even more enjoyable.
The breakfast that is included is also a bit lacking, especially for onsen hotels.