This was me and my fianceés first Airbnb experience, and we were very happy with everything. Paul was a very kind and thoughtful host, who not only directed us to the place easily, but offered great tips on variety of things. The place was clean and cozy and in a great area that turned into our favourite of the ones we visited.
Without complaining, I should mention that the hot water doesn't last forever if there's two of you showering in a row, and that the walls are thin and next door neighbours, especially the kids, very audible. Only during the day, though, so we didn't mind as at that time we were mostly busy exploring Paris, anyway.
Whole-heartedly recommended! :)