Just an awesome place. The room is very big by Japanese standards, and the whole layout is very cool. Amenities are also great. The outdoor bath and the view you have of skytree are perfection.
Downsides: no curtains so it was too bright in the morning with just blinds. The map Airbnb sent me was wrong making it hard to find. The futon was a little thin (I didn't mind but my Japanese girlfriend did).