We greatly enjoyed our time (12 days) at Francoise's house. It was large enough to accommodate our party of 7 with no difficulty whatsoever. It looks just as it appears in the pictures and the private garden is very peaceful. When my mother needed a rest from sightseeing she was very comfortable just spending the day relaxing in this well-decorated home.
The house is near the Tolbiac (line 7) metro stop as well as the Butte aux Cailles neighborhood. The neighborhood struck all of us as very safe. There are two nearby grocery stores, which is useful given that the house has a full kitchen.
Francoise and Jean-Paul were excellent hosts: very friendly and offering good advice on local places to eat and shop.
After spending 12 days in their house, we recommend Francoise and Jean-Paul's home highly for those who are planning on staying in Paris.