I have nothing but great things to say about Aki and Toko's place. I stayed here for a week in March. Transit-wise, it's close to a subway station with two important lines, very easy to get to Shinjuku. The area also has a number of off-the-beaten-path izakayas, restaurants, a supermarket, and a 7-Eleven all within a 5 minute walk. The view from the balcony speaks for itself -- it's just as amazing in person as it is in the pictures, and even better at night. The place itself is much more comfortable than a hotel room, and with more space and better amenities. It's on a busy street so you can hear cars, but I don't think I ever heard any neighbors. Aki and Toko were also very good, responsive hosts -- they have a welcome booklet in English with tips, tricks, and everything you need to know about the unit. I highly recommend staying here.