The room was quite small but clean and had enough storage room for our things. I wish it had a mirror, lucky I brought one though.
The bed was comfortable but we found the blanket too thin and we're freezing most nights.
We tried using the aircon with the explanation sheet provided but it was more of a unrecognizable breeze rather than warm air.
We used the washing machine which was fine but the dryer was terrible/too weak and even after 90 mins/300yen, our clothes were soaking wet. We assume the washing machine didn't spin the clothes properly. We ended up having wet clothes all over our tiny room for two days.
The other guests were mostly quiet and the cleaners cleaned the main areas daily and did a good job. However, most other guest left their hair in the sink and shower and almost every time I went to the toilet, the toilet seat had been put up or sprayed with urine, which annoyed me (as a woman). We never had to wait to get into the shower or toilet and there were other bathrooms on higher floors we could have used in that case.
WiFi worked fine and we also used the pocket wifi which was alright but very slow (maybe we used too much data).
The area was good, pretty quiet and generally a business district. It's close to many stations and it was easy to get around (we usually took the rapid line to shinjuku from Kanda which only takes 15 mins!).
Overall it was a good stay and I would recommend to it to anyone who doesn't want to party and just have a shorter stay in Tokyo. If sharing bathroom (and kitchen, which we didn't use) is fine with you, you'll be happy at this place. There's also an elevator which was very convenient!