This was an interesting stay. We (three adults) appreciated the location of the stay. It sits in the middle of a quite mini neighborhood right outside of the heart of Shinjuku (10 min train ride from Shinjuku Station). Its close proximity to convenience stores (pharmacy included) and the train system were the icing on the cake.
Please note: Be prepared to a close encounter within the stay. The second floor walkup was a bit small for us (6ft plus men) but the two beds in each room (one room being shared with the dining table and kitchen) worked out. The stay is clean and the amenities are fully functional. Google Translate anything that seems confusing.
Aki was very communicative (thorough in our check-in and check-out) and understanding with any questions and/or changes.
Thank you