We really loved our stay here and would stay again. 1 subway station away from Shinjuku main station. Short walk to everything around Shinjuku but in a quiet private little area with a great bakery.
The only 2 things I would change if I wanted to make this stay perfect would be a sofa in the living area, there is a tatami bed instead. Also the check in instructions come through the day of checkin, given we were getting on a 10hr flight I was a bit panicked that we would arrive in Tokyo with no accomodation.
Our son loved the toys that were available.
Thanks so much for a great stay, you have a lovely place.