It was a very good room. It was relatively spacious for a city like Tokyo, and had two good beds. The room was very clean, both in terms of design and actual cleanliness, and the shower was great. In terms of location, it is not in a very pretty street, but if you are willing to walk for a few minutes, you will be smack-dab in Shinjuku, and you can easily take a train over to the other parts of Tokyo.
Getting in was easy, and the garbage system and so on are easy to use. The only real thing that was negative, was that the room does not have a clothesline, or even a place to hang your clothes, despite it having a washing machine. This meant I had to dry my clothes in the closet, by hanging them on hooks there. The balcony should have had a clothesline, in my opinion, as is common in Japan.
Also, while this room sleeps two, and is very clean, it seems to be to be mostly a business apartment. It has a decent cooking area, but with only a couch and a very low coffee table to sit on, it isn't really set up well to eat elaborate meals. The kitchen, while it gets the job done, also only has two heaters and the appliances are of low quality. While you can easily cook smaller dishes there, if you are someone who really wants to cook on their trips, perhaps this apartment will not be the best for you. Then again, in non-pandemic times, people can just walk twenty feet and go any of the numerous restaurants around the area, so maybe it matters less to most. But with the pandemic, and with my desire to cook for myself, at times the kitchen felt a bit limited and cramped.
In general, fantastic place though. Really clean, really nice to look at, good facilities (good bathroom, nice beds, good tv, decent couch, decent kitchen). I can recommend it, if you want to explore Tokyo from a central place (to get onto trains from).