I don't know the details of what took place, innocent mistake or a cleaner that did not show up, but hopefully future guests arrive to an apartment that has actually been cleaned. When we checked in, the place was a mess with garbage piled in the living room, hair all over the floor, sinks, and shower, and dried urine all over the toilet. It took a few hours of back and forth with AirBnB before the host's friend showed up to clean the apartment and drop off new bed sheets and towels. The prior guests should be embarrassed by the mess they left, especially in the bathroom.
Location was great if in Tokyo to eat, explore and enjoy some nightlife. Self-check in was relatively straightforward once you find the building - be sure to ask the host for her pictures of the building entry so that you'll have an easier time finding it. We only received the images 30 minutes before check in but did not see them until already inside. Plenty of space for three friends in Tokyo for a fun weekend.
When having difficulty communicating with the host in a non-English speaking country, don't expect seamless service from AirBnB. It took several hours of seemingly failed communication between AirBnB's English-speaking call center agent managed to connect with the host who then sent over her lovely friend to clean up the apartment.