We really loved our stay at Calm Hatagaya. It's a very quiet neighborhood and a short walk from the station. Masumi was very responsive and kind (we asked for more towels and had them the same day!) We had some of our best meals in the area.. Kushi Zaru was fantastic and Hashiya Hatagaya was some of the best pasta we've ever had. Accessing the Keio New Line from Shinjuku station was confusing the first couple of times (you have to go through platform 3 and walk a looooong way to find platform 4.. watch for signs), we would have preferred to be on a JR line but this was a minor issue for how lovely the neighborhood was. The apartment is big for Japan and the shower was awesome! We had no trouble sleeping, the bed was comfortable and the A/C kept us very happy in the unexpected heat. We would recommend this apartment for someone looking for a quiet, comfortable place to spend their evenings.