Nadège's apartment is incredibly cozy, clean and well equipped; it's great for 4 persons. It's in a very quiet neighborhood and very close to the metro (it takes just like 15 mins to get to the city center). There's a supermarket right around the corner, and lots of places to grab something to eat. The apartment is in the 5th floor with no elevator, which could be an issue for some, but its a really amazing place!
Nadège is a great hostess, and a very nice person. She answered every question we had quickly and was incredibly helpful.
We would definitely love to stay at her place again on a future visit to Paris!