Excellent location! Walking distance to Notre Dame and Sainte Chapelle. Transportation just around the corner. A couple of markets and bakeries just a couple of blocks away.
The apartment is on the 6th floor with a handy elevator. We kept the windows closed (it was quite cold in Paris) and we heard no noise at all. The flat is small but works great for a couple with not a lot of luggage or a single traveler. The bathroom has a full size tub which is very welcome after a day of sightseeing.
Chantal was an excellent host. She answered all of our questions, gave tips on nearby markets and followed up with us to make sure everything was going well.
I would definitely recommend Chantal's flat if you are looking into spending a few days in Paris.