Florent's friend Aldric was gracious and responded to my requests very quickly. The flat is modern and attractive as shown in the photos. The rooms are a nice size, larger than some Paris apartments. Excellent shower, excellent wifi, comfortable sofa, large dining room table, good kitchen. The neighborhood is very interesting and is definitely not in a tourist area--much more like a true Parisienne experience. There are many shops, restaurants, cafes, and the metro within a short walking distance.
There were some things that detracted from my experience. The UpBed pulls down from the ceiling and stays about 4' (122 cm) above the floor. It required me to climb up on a stool to get into and out of the bed. That was very awkward. The floor has four areas with ledges/changes in floor height, so I had to be careful not to trip.
The entrance to the apartment requires walking through a courtyard past eight smelly rubbish bins, and part of the area isn't lighted at night.
The positive and negative aspects were about 50/50.