There are not many options for solo travellers, most room are designed for 2+. APA has rooms for single occupant and the price was pretty good comparing to other hotels in the area, not to say there is a fantastic onsen downstairs! The onsen has both outdoor and indoor baths, it does get a bit crowded sometimes, so I wouldn't recommend going between 9-11pm.
The room was very clean and the bathroom has a bath in there. The size of the room is decent for one person in the city, however there is not enough room to lay my luggage down fully. The location was good but not excellent, 8-10 mins walk to nearest Jr and train lines. All the staff were very courteous and helpful.