I had a great experience at Coline's apartment in Paris. The apartment was very clean, quite spacious, furnished, in great condition, and in an amazing location. The pictures are accurate. The neighborhood is my favorite location in which to stay in Paris. Within a 10 minute walk are four outstanding bakeries (Du Pain et Des Idees, Tout Autour, Gaia, and Liberte), there are restaurants and bars everywhere, and many public transportation options, although it is central enough that I find it easy to walk to most parts of the city I want to visit. Airport access is also quite easy: RER B to Gare du Nord, and then either a quick metro trip OR an easy 25 minute walk from Gare du Nord to her apartment.
Coline herself was a wonderful host. She was very easy to communicate with, friendly, and quite accommodating.
I strongly recommend her place if it is available.