My second stay at this place. The room is relatively large , for Tokyo standard. The rooftop bathtub has a really good view especially at night. It is a bit of a walk from the station. Also there is no elevator at the place so you will have to take stairs to get to the room and the rooftop.
There is a washing machine at the rooftop which we can use free of charge. You can dry your cloth inside the room or use the air dryer at the bathroom.