We stayed Michi's place at 12 days. The house was nice and clean and it was just next to the Okubo metro station. And you walk just about 10-15 mins to the centre of Shinjuku from Michi's place. There were also a lot of restaurants and cafe's next to the apartment. We didn't have any problems during our stay, but Michi was very helpful and he responded very quickly if we asked something. We really recommend Michi's place if you are going to Tokyo!