Raphael was very responsive. The location was great, with easy access to the park buttes Chaumont, and a train station within walking distance. The space is relatively small. Be careful when booking if you need more room to move around in the shower (it's particularly small).
The place had everything that is needed, including a well-stocked kitchen. Neighbors were relatively quiet, and despite being on the ground floor, the space was relatively private (and secure). Wifi was fast enough for work calls, with some occasional issues (nothing that a quick restart of the router didn't solve). I would recommend this place for shorter stays (I stayed there for nearly 1 month). One person can comfortably stay there, or 2 people if you're close (partners or good friends).