I stayed for 2 weeks, the flat is really a good place to stay longer. I felt like staying at a friends place due to its furniture and the additional items, it gives a welcoming and cosy attitude. Moreover Jean-François is a good host, he is fast in communicating and organisation for check-in and check-out was fine and easy.
Location is great! The street is off from vivid areas, which makes it quiet and relaxing! But one can jump back into the Parisian life in 3 minutes. Both ends of the street lead to metro stations, bistros, supermarkets, groceries (all kind of), velib stations, everything; :-)
This place stays on my list for further visits.