Location ia very good, next to Higashi-Shinjuku station and walkable from Shinjuku station where there are a lot of food options and shopping. There is also a Lawson convenience store nearby. David and team are also very friendly and the 24hr reception is very helpful (compared to other airbnb).
Only issue is with the shower, water pressure is low making it difficult to have a comfortable shower. The water temperature is also difficult to adjust, it will be too hot or too cold. Nevertheless a comfortable stay