Céline's flat is a well-decorated, spacious flat with all that is needed for a stay in Paris. We stayed four nights with our two children, and had a lovely time. The flat is located on the top floor of a building, with a view of Sacré-Coeur. Downstairs is a living room, open kitchen and master bedroom with a shower. Upstairs are two children's bedrooms with a bathroom with a bath.
The area is extremely well connected with a Metro close-by, fine restaurants, cinemas and theatres. The Musée Grevin and the Grand Rex are close-by. I would recommend this flat to anyone wanting to stay in central Paris, a couple or a family. We didn't meet Céline in person, but her friend welcomed us, showed us around, and was there on-time when it was time to leave. A great parisian experience all-round.