I travelled in Japan for 18 days and stayed in 3 Airbnb and have to say that Sei's place was the best out of the 3. There were 3 of us and it was just nice for us with 3 big luggages. I think it will be a little bit tight for 4 people. The distance from the station is a little bit of a walk (around 10 mins or so) but that walking time is reduced since you will walk through the shopping district. Overall a nice place and will recommend it to anyone looking for an Airbnb in Tokyo!