I enjoyed staying in this apartment. I loved the tall windows with urban views. The apartment was nicely decorated and in good shape.
The location at Central Square, which gathers people from all walks of life, was convenient, with public transport, shops and restaurants (including my favourite fast-food joint Life Alive) around the corner. Charles River was not too far running or walking, and I daily walked to the Harvard campus (a 20+ minute walk / one way).
The apartment was quite well equipped (perhaps a full-length mirror could be installed somewhere) and it was relatively quiet - the only slight sources of noise (not really disturbing me) were the fridge, the AC equipment and supplier trucks of the adjacent supermarket, and, in the summer season, bands performing at the Starlight Square (which I enjoyed a lot).
Communication with the hosts was mostly excellent. Even if the the first messages before my stay had an automated feel to them and did not really answer my questions, later, during my stay, I always got a prompt and friendly response to all my questions, solving most of the issues I had.
The Wi-Fi was occasionally somewhat unstable throughout my 6 week stay. For example, I had to sit next to the router in order to be able to have a video teleconference and still ended up having poor connection at times.