Masa's ground-floor suite is a 3-minute walk from the Asakusa like which runs basically from Haneda to Narita. So although the actual location is not in the center, it is really convenient to get around on the metro, which you're going to have to use anyway. We were able to take the train from Magome station all the way to Narita without changing trains for 1,410 yen. Not all trains do that, but there are some that do. This makes staying at Masa's very convenient. The apartment is new, fresh, clean. There are two single beds instead of a double, but this was minor to us and we were really happy to stay there, and I'm sure we will again.