I had the best experience in Daniéle's flat, which has everything you could possibly want. I spent some time for work and had some vacation left afterwards: the view is amazing, the flat is huge, it is close to the metro station "nationale" from where you can reach easily all the major sites in Paris. The flat is beautifully decorated, it has even a printer and a scanner available in case you want to print your boarding pass. Although I didn't meet Danièle in person she was very friendly and helpful even before my stay. I warmly recommend this place.