We had a very nice stay at Kenji's place! If you are the maximum amount of people the top floor does get a bit crowded, but it's perfectly okay if you aren't planning on spending extended amounts of time at home. The location is very nice, you do have a 12 min walk to the subway staions, but the subway stops are very central and close to some of the sightseeing spots. Would definitely recommend, especially for a larger group!