My mom and I stayed in Wilson and Marielle's apartment for four nights. Wilson met us right when we arrived and gave us all the information we needed. He also was very accessible throughout the stay, in case we had any problems or questions. The apartment is very clean and comfortable, just enough for two people. The neighborhood is quite safe and there is a cute market area/artist's square next to the Sacre Coeur, called Place du Tertre, with painters, creperies and souvenir shops. The center of Paris is easily accessible by metro (we used the Marcadet Poissiniers station, 10 minute walk away, to stay within the safe areas). We had a great stay and highly recommend their place while staying in Paris!