We very much enjoyed our stay at Christelle's apartment. Huge in size by even North American standards we (two couples) had more than enough room to spread out. The massive windows running along the entire front wall brought in natural light and when opened allowed for fresh breezes and the lovely sounds of the street below to trickle in. We really felt like we were a part of Parisian life.
The apartment is situated in a lively area of Montmatre; I would suggest you bring ear plugs if you are a light sleeper as the street noise was quite loud from both late night sidewalk restaurants and bars and city workers collecting garbage very early each morning. A sleep mask would come in handy as well as the bedrooms are quite bright in the morning.
Christelle's Mom was there to greet us and go over details. She explained where in the neighborhood to go buy food, etc... We did end up going to the G20 to purchase items for the apartment such as toilet paper, paper towel and tissue paper.
The kitchen is quite compact but we managed to cook a meal or two without difficulty. We very much appreciated the Nespresso machine each morning!
Beds were comfy and we were provided with ample facecloths, hand towels and bath sheets.
Two metro lines are a very short walk away. Restaurants, cafés and shops are at your doorstep.
We would definitely stay there again and would recommend Christelle's apartment to anyone coming to Paris.