The apartment is great. The whole building seems dedicated for Airbnb and one management company is running it professionally. Communication was always fast and precise.
It has all the amenities you need. We stayed for 6 nights and never felt we missed anything. Maybe a washing machine would be nice to have for longer stays, but we had enough changes of clothing for our 6 nights.
The apartment is very modern and clean. The toilet and washing areas are confined away from the main room, giving them good privacy.
The only thing worth complaining about is the carpet. It needs a good vacuum cleaning. Hairs everywhere on the carpet. We also found lots of hairs on the white bed linen, probably left the by the cleaning staff. This needs improvement.
Otherwise an overall pleasant stay in a very convenient and interesting area of Tokyo. Highly recommended!