Jean-Michel's apartament, is lovely, welcoming, organized and very clean. Although small, the place is very comfortable and you you have everything you need for your stay in Paris.
Jean-Michel himself was an amazing host, very helpful, flexible and caring about our stay. He even kept our bags in his personal apartment after we checked out, so we could go for another walk in Paris.
The loctaion is amazing, in the heart of Marai, close to restaurants, shop, boulangeries, etc. Just 5 min way from Notre Dame and 10 minutes from the Louvre. I don't think you can find a better location than that.
I couldn't recommend more this place.