Olivier place is very nice and suitable for 4 ppl. Well located and connected to rest of Paris via Metro line/RER or taxi.
We arrived very late from Geneva because of some train delay but Olivier was present to receive us and guide us from Metro station. And though it was pretty late he explained us most the things.
The apartment was clean and has all the amenities including a kitchen and a good music system. Lots of books(which is always nice though they were in French:)).
Since we were on a short trip couldn't talk much but the communication throughout was very smooth and would have loved to spend some more time.
This was my first stay with AirBnB so was a bit sceptical but it all turned out very good and I would definitely recommend this place to people specially if you are staying for more days.

Hopefully will stay here next time with more days in hand to fully enjoy the place.