Seiji's place was clean, easy to access and met all of our requirements.
The apartment fit comfortably a family of four--two adults and two kids. We all found the beds to be large enough and warm and comfy.
The laundromat and convenience stores were close nearby and Shinjuku station is a very short walk. I recommend visiting Isetan's lower floor for some upmarket takeaway food. We had a great stay in Tokyo... Will be back!