The host was very nice, responsive and let us check out a little later than 11. The building door can be opened with a code and she leaves the key in a locker, so checking in was super easy.
The house is "lived": we found her products in the bathroom and food in the fridge. It was ok for us because everything else was perfect, but it is to note with respect to other AirBnb experiences we had.
Wifi was working well, there are a washing machine and a fan in the apartment (useful for the hot Paris weather). The 6 floors of stairs are felt, but the stairwell is cute and. The apartment is bright with lots of windows and direct sunshine but it doesn't face the street so the noise level was good.
Overall, the apartment and the neighbourhood are lovely and we had a great time.