The location was absolutely perfect. We were unsure about which area to stay for our first trip to Tokyo, but we quickly realized that Shinjuku is in the middle of everything. The value was great, and this location was close to 2 stops on the metro. We walked to restaurants, etc and to both stations.
The airbnb is on the 3rd floor with no elevators, but besides that it was great. Also, the bathroom was a bit small but for the value of this place it's unbeatable :) the owners were also super responsive, and our Korean contact for the airbnb responded very promptly. Overall, I'd rate 5 stars and stay here again.