It was a very comfortable stay. The AC worked well to keep the room warm during the Tokyo winter. When I arrived at the Airbnb to check-in at 4:50pm, the cleaner was still not done with cleaning the room. I waited for 30 minutes inside the room for the cleaner to finish, which wasn't a big deal.
For tall people, the bedrooms are very small and the beds weren't very long. There were also walls on 3 sides of the beds, which made sleeping a but uncomfortable as my feet had nowhere to go but touch the wall. The ceiling is also low.
The bathroom is clean, and the kitchen was moderately well equipped. The lack of drinking glasses & any large bowls means I had to purchase my own from the Don Quijote store nearby.
Disposal of trash was also very convenient. A 10 minute walk to JR Okachimachi Station, 7 minutes to Ginza/Oedo Line, 3 minutes to Chiyoda line made transit also very convenient. Overall a very nice stay, albeit not the most comfortable as a 6'4 guest.