The apartment has a great location as it is just a few blocks away from the Arc de Triomphe, with cafés, restaurants, pharmacies and supermarkets at walking distance. The pictures are accurate as you can see the Eiffel Tower directly from the apartment, which is quite amazing. The apartment is located at the top-most floor and, as indicated in the description, there is no elevator. The stairwell is narrow and carrying big suitcases might be challenging. I think climbing up and down might be difficult for older people, so be mindful about it. There is an Indigo parking right in front of the apartment as well (paid parking).
On a personal note, during our stay we had to return from Paris earlier than expected due to personal reasons. Quentin was kind enough to offer (without asking) reimbursing the night we would not stay at the apartment - which was quite unexpected but also highly appreciated!
All in all, the description is accurate and the apartment is cozy enough to stay for a few nights. The only caveat is climbing up the stairs - which becomes easier after the first few times.