This is a great apartment in a fantastic location. Johanna was great and quick to communicate with, and we were able to organise an early check in which we appreciated. The apartment was a decent size and mostly as we were expecting. However, I had seen a recent review mention that the air conditioning wasn't working; I checked with Johanna before our stay and was assured that the air conditioning was working, only to find out on arrival that the central AC wasn't working, and portable ACs were provided instead. In order to effectively use the portable units, you need to vent them outside a door or window. Due to the composition of the apartment you need to open a door as there are no windows, which then lets in hot air and noise. Note: the apartment is on a very busy street, which is fine with the doors closed; not so great at night when you want to sleep.
I raised this with Airbnb who refused to do anything about the situation because an alternative was provided, even if it wasn't a like for like alternative. If air con is important to you, especially in the hot Parisian summer months, I suggest you clarify the situation before booking.