Alex's place is a fairly large apartment for Paris. It's very well located near Arts et Metiers. The check-in was a bit complicated and required meeting up with the cleaning lady at a specific time. I made it work but had to move my schedule around for it. Basic necessities were not present in the apartment which I find problematic for the price and a week-long stay (soap, shampoo, TP...). These are fairly minor things that could be improved easily by the host.
However the walls (or ceiling) are paper-thin, and you feel like you are watching a movie with the neighbors.