My wife and I stayed here for a month while house shopping for relocation. The space was more than we needed and allowed for plenty of space for our excessive luggage. The location was very close to Shinjuku by train or a very nice 30 minute walk through the park.
All amenities were provided and having a washer and dryer in the unit saved an immense amount of time and allowed for a much more comfortable stay.
Rumika was extremely responsive and helpful with any request during our 4 week stay. I would highly recommend this location for anyone traveling who wants to be close to Shinjuku or Shibuya while still being in a nice quiet neighborhood come the end of the day. The nice residential area makes using the balcony for morning coffee or late night breeze much more satisfying without any noise.