I stayed at the Masaaki's place for 4 nights during my business trip to Tokyo. The apartment is conveniently located in a quiet neighborhood very close to the Sky Three. It is also minutes walk from the subway station from which there is a direct connection by train to Haneda Airport. The flat is not too small based on the Japanese standards, and has a full bathroom and a small kitchen, which has everything for basic cooking. The self-check-in and check-out process was very easy and straightforward. Will definitely recommend this place. Thank you Masaaki!