We felt very well taken care of during our stay at Masa's apartment. The space itself is lovely and spacious, with a living room, bedroom, and large bathroom/toilet. The bath itself was lovely!
What made this trip was how helpful Masa was as a host. We had a small issue with check in which meant we couldn't get into the space - after contacting him he came to help us in under ten minutes!! he also helped us book a taxi to Haneda airport for an early flight, and got up to see us off despite it being so early!! He was very helpful and quick to respond to any messages. We'd definitely recommend staying here.