It is a single room, however as a family of 4 (total) we managed fine. The location really is very close to the station so access to Tokyo central is very quick and does not cost much. We liked the walk from the street as it has a number of shops and small restaurants and in the morning there was plenty on offer for a lunchtime bento, drinks and snacks, Sake and Umeshu for the evening. Very handy and affordable access for our family.