We were a family of 5: 2 adults and 3 kids (10,7 and 1) so Celine's place was perfect for our big family. It looks just like in pictures.
The apartment has a very Parisian feeling with it's decorated elevator, walls and exterior. Even the door knobs were decorated. On the down side this Parisian feeling comes with more noise (floors and doors are squeaky) but I think it is part of the experience. Anyway we were all so tired from walking all day that we were not bothered.
We had everything we needed in the kitchen and bathroom. There is even a blender if someone wants to prepare baby food.
The location was amazing: 1 km to Place de la Concorde and Opera, 2 km to Louvre, Montmartre and Muse d'Orsay, 3.3 km to Eiffel Tower so we rarely used public transport. Also there are many supermarkets and restaurants nearby.
We would will definitely come back.