My parents and I stayed at Phil & Laure's place for three nights. We didn't meet Laure but were greeted at the apartment by Phil, who was very friendly, generous with his time, and extremely helpful and thorough in his recommendations for the area.
The apartment is located in very close proximity to numerous metro stations so it's easy to get in and around Paris or Montmarte, however after a day of sight seeing, climbing the 6 floors of stairs is tiresome, to say the least!
I slept on the spare bed/couch in the living area which was very uneven and quite uncomfortable and my mum found the bed in the bedroom too firm. Additionally, none of us could figure out how to have a warm shower; it was either scorching hot or freezing cold. The toilet as well is pretty much in a cupboard so if you're tall like we are, you barely fit inside. Lastly, after returning to the apartment each evening, having had all the windows closed, the apartment seemed to have a smell like cigarettes.
There is wifi and everything you could need in kitchen facilities which makes self catering easy. There was also a good array of food stuff left for our use, which was much appreciated, and my parents valued the good security of the apartment.