Amongst all the airbnb I've stayed in in Japan, Vivian's place has got to be the best in terms of space, comfort and cleanliness. The bed was surprisingly very comfortable and Pinn, who hosted us was very friendly and open to answering any questions we had. The only word of warning is the set of stairs you have to go through to enter the apartment, it wasn't too bad as it's only 1 set and our luggages were only about 20kg each but keep that in mind. We would definitely stay in the same airbnb the next time we're back in Tokyo.