Me and my girlfriend happened to stay at Felix's apartment for 3 days and boy it's such a beautiful place! We did really enjoy the interior which is very elegant and fashionable. There are hundreds of books about art history, photography and cinema. Guys also left a bottle of wine and some snacks for us which was very nice of them :) Thank you one more time Felix and Lisa ;)
The location is very convenient, just 2 minutes walking distance from Louvre, although there's a metro station just by the building and many cute restaurants.
Our staying there was nice and we had very flexible schedule for arriving and departure.