The check in and out process was not ideal, as Alice had updated me 30 mins before we were to check in that her cleaning lady was not on time and hence we had to wait for 2 hours with our luggages. To her credit, Alice arranged for us to stash our luggages and reimbursed our refreshments while waiting. You will need to walk about 5 mins away from the flat to collect the key from a laundromat.
We had to check out at 4:30am to catch a flight, but Alice told us that we had to return our keys to a location 1.8km away at 4am in Paris. This was rather ridiculous and Alice was uncontactable (via message or phone) after sending the location. We could only return it as our airport transfer driver was very kind and made a detour even though he was very busy. For future visitors, you can contact Airbnb support regarding this to just check out by leaving the keys in the flat itself. Alice was uncontactable for the most part regarding our queries regarding her instructions.
Other than these unfortunate incidents, the location of the flat is very ideal, about a 5 mins walk from Arc de Triomphe and located near convenient stores like Aldi and Monoprix and a few charming restaurants. However, there is indeed a certain level of street noise at night which can affect light sleepers. The flat itself is rather nice and has a small kitchen you can cook small meals in, as well as a queen bed and a sofa bed that fits 4 in total rather snugly.