Overall, the place was great! The main bedroom was of a good size for a short stay for 2, but the other bedroom is a little small. My group of 3 had lots of laundry, so we wished there were more hangers. The air-conditioning was a little confusing to use even with the guide, but nothing to fuss about as we figured it out by ourselves.
The location is super near to the JR stations, and just a stop away from shinjuku. There are many restaurants and convenience stores nearby as well! I’ll recommend this place for 2 pax, 3 max. I think it would be too small for 4 people.