This was a great find for us! We were worried it looked too cramped from the pictures, but it was very spacious compared to the other hotel we had stayed at in Tokyo. The bathroom was divided into a sink/toilet and shower area, so could be used by 2 people at once with privacy. The kitchen was well equipped with an electric kettle, dishes, microwave, stove, etc, and there was a washer/dryer in unit. The bedroom also was quite comfortable and bright (we opted for 2 twin beds) with a decent amount of room to spread out luggage.
In addition, the location of this place was pretty good as well. It was only a few min walk to Higashi-Shinjuku station (would recommend getting the Subway pass as this is not on a JR Line). The building is very secure as well with a code lock to get in the main entrance, and also has the convenience of an elevator. The biggest issue we had was finding the location of the place, because there is also a DoMo Hotel nearby (run by the same people) that pops up on a google maps search. The receptionist there was the same person we were in contact with via the airbnb app, though, and was extremely helpful in assiting us with any information we needed (taxis, directions, luggage storage, etc.). We really appreciated them allowing us to drop off our luggage few hours before check in time as well! Overall this was a great pick and would not hesitate to recommend this place to others!