Nice little space, great location in the center of Paris. Place was clean, basic necessities are covered. On top of that, tasty coffee, Netflix and a bottle of wine on the table, which was nice!
We arrived at the place at night, so it was a bit difficult to make out the correct entrance in the dark. The place doesn't have a visible street number. Jules kindly helped us out on the phone, and sent us a picture of the correct entrance.
The electronic lock, while simple on paper, was a rather frustrating experience for us throughout our stay. Jules sent us all the necessary info, but (at least for us) it didn't always work right away. The app can be hit or miss, and it took an extra minute here and there when entering or leaving the place.
Lastly, the noise level: The walls are thin, so you'll hear a fair share of neighbor activities in- and outside. There are several noises running inside the apartment, i.e. ventilation, water cooler, and the fridge (kitchen is right next to the bed), some of which can be turned off for the night, some not. This won't be an issue for everybody, but for those who are light sleepers or have sensitive ears - bring earplugs.