Let me first make clear that I made the reservation, but have not stayed at Virginie's house personally. My friends who stayed there were happy with the apartment and enjoyed their stay (our time in Paris was work related). Virginie was a friendly and helpful and flexible host and responded fast to our questions. However, if you are not one big family or close friends, the house lacks some privacy. Other than this there is a problem with the internet, but this seems to be a problem with a certain Parisian internethost as I myself experienced the same instability in another apartment with the same provider. You are supposed to have internet all over the city, but most of the time you end up having a weak connection or no connection.
The apartment is in a lovely area and the wonderful park Buttes Chaumont is really close. I recommend this apartment!