Location, location, location. This is a wonderful apartment with lots of great amenities but the best thing was the location, just steps off Rue Mouffetard in the Latin Quarter (picture a windy, pedestrian-only, cobblestone street with lots of little shops and bistros). We loved being able to step out 20 feet to the amazing bakery, cheese shop, wine shop, and bistro right there! We also heard from locals that the pizza place next store is great but we never got to try it.
The apartment itself was great! It had everything you needed, and the a/c and the washer and dryer were very much appreciated! The shower and bathtub were huge! It was also nice to have two toilets. Beds were comfortable as well.
Mai was also very helpful and available via phone when we had an issue retrieving the key (it was no big deal and resolved quickly). Wish we could have stayed longer!