First off, the location is great! You’re right across from a train station on two very popular lines that make it so easy to travel around Tokyo. The place is also very clean, but very tiny and minimalist.
My main concern was with check-in, you have to use an iPad and communicate with an operator over a horrible connection to get your code to enter. We had trouble understanding each other, he was referring to a form I had never heard of, and kept breaking up whenever any one started to say anything (not an easy issue to deal with after a 13 hour flight and several train rides to get there). Also, the apartment was extremely loud with sirens blaring all night and jackhammers in the morning, and you can hear every person that walks past the window.
Cannot complain about the location though, so if you’re just looking for an access point to explore Tokyo and bring ear plugs, you’ll be set.