First of all, the room/building was right next to a school and you’d be woken up by the school bell and the activities taking place at the school playground everyday at around 8am.
Second of all, the room was small, very small for two people. And there were stains on the bedsheet ( I believe they were period stains). Bed was super small and uncomfortable. Bathroom was also super small.
Overall not a very pleasant stay and the building itself is very dark. Commute to Shinjuku took around 30 mins. I would not recommend this place. If you could raise your budget slightly, I’m sure you can find something better.