The apartment is small and it was definitely easy to hear neighbors - but I was expecting all of this based on the apartment profile and reviews. It wasn't anything that kept me from sleeping or enjoying my trip.
The view is beautiful!! Make sure you're equipped physically to take the trip up 8 flights of a spiral staircase whenever you're returning to the apartment. The neighborhood is lovely - my first time staying in this area of Paris, but had an idea of it. It was great!
For anyone staying for an extended time, this might be difficult due to the size of the apartment. Also, I was only there for four nights, but I noticed there weren't any cooking essentials if you're interested in doing that, nor a microwave. Additionally, there is no bathroom sink, so brushing your teeth, washing your hands and face take place in the kitchen sink.
The address I received via AirBnb was wrong compared to the actual address of the apartment. It made me feel a little concerned before allowing to be taken upstairs to the apartment. I verified a few things before doing so. In addition, a friend/colleague of the host met me which I wasn't expecting, making it a little more strange.
Despite that, once I confirmed with them and felt comfortable, they were very nice and even ran my 50lb luggage up 8 flights of stairs for me. It may be hard for a non-French speaker to understand what was going on.