Laetitia's place is a charming apartment right in the heart of everything you want to do in Paris. A 3 minute walk to Notre-Dame and so easy to get to everything else you want to see. The apartment itself is quite lovely, a small space but very stylish and homey (definitely feels "lived in" as opposed to a hotel room style space). We liked it a lot and it was a great value! We loved our stay in the apartment and wish we could have stayed longer!
Only hangups were we had to wait for about 15 minutes on the street after the agreed upon time to check in to meet with Laetitia's friend for check in (we didn't have cell phones to coordinate in transit), and there was a bit of a shower clog when we arrived which we had to take care of. Not a huge deal but worth mentioning. The apartment was on the 6th story up the stairs, which was not a problem for us.
Overall highly recommended!