I booked this place for 4 days to visit Tokyo area w my 2 teenagers who are 15 and 18. Shinokubo is one station away from Shinjuku and place is just short 5 min walk from the station.
Easy to find and there are so many convenient store and restaurants near by. . Shinokubo station is much smaller station in Tokyo so easy to get in and out and we were able to jump on yamanote line to go all the places we wanted to go.
Has minimal kitchen items so we did cook light breakfast and did eat out lunch and dinner.
1 bed that can sleep 2 and she provide 1 futon mattress on the floor which my son did fine.
Bathing area is small so if you are not average build may feel small in there.
Wash machine works great so you can do laundry if needed .
We had great stay there.