We didn´t start good. I arrived to the apartment at 13h (as I had told Paul) and I couldn´t get the keys. I contacted him and the answer was that I had to wait until 20h. I asked if I could go to get the keys somewhere but it was not possible. I had to wait for seven hours with my luggage. Finally I got them. Paul told me he would refund the price of one night for the inconveniences, which I accepted and I hope to get the sooner the better.
The positive side, I would say the location is great (very close to Centre Pompidou). The bed is very confortable and the building is very quiet.