Really lovely flat in one of the best areas of Paris. You are a 15 minute walk from the Notre Dame, but in an authentic, vibrant neighbourhood. The Luxembourg Gardens are essentially your backyard.
The apartment is very small, and a couple might be a little tight. The mezzanine doesn't have enough ceiling clearance to stand up straight, but that's part of the charm of the apartment. Bathroom is difficult to use because of its very very small size.
I highly recommend Alexandre's apartment if you want awesome value in a beautiful area with all of the city's amenities at your feet. Alexandre was a kind, and responsive host.