The apartment is perfect, the location unsurpassable and the neighborhood is very cosy and full of bars, restaurants and a supermarket is only 3-4 minutes walking.
We couldn't meet Jean-Francois but he was always accessible by mail or message and he answer very quickly.
The house is very new and with all the facilities that you can need dishwasher, toaster, coffee machine, hair dryer...
If you are going to Paris don't hesitate and have nice days at Jean-Francois house