We had a very nice time at Kenichi's place! The room is big enough for two and it's probably one of the most comfortable beds we've ever had on an airbnb trip (great cushions too)! Bathroom and living room are shared, and depending on the other guests, it can sometimes be a bit loud in the evening. Tokyo City Dome is just down the street - nevertheless, the room is quiet.
A good place to stay when you want to spend a couple of days in Tokyo!