I stayed in the Cecilia's flat with my family and we enjoyed so much our holiday there in a true domestic atmosphere. Tha apt is cosy, neat and clean well equipped with everything you need. Cecilia and her family live there and you can breath a warm atmosphere in the house. The view over the Paris' roofs is wonderfull and you can see the Eiffel Tower from one of the rooms. The location is perfect, just close to Le Marais the Paris' district I prefer , and easily connected through the metro lines.
Unfortunately we couldn't meet Cecilia as she was spending her holidays away from Paris ; however she promptly answered to any request of mine. We have been welcomed by her parents who are lovely and nice persons.
I definetly recommend " Under the roofs".