The apartment itself is lovely. It's snug and cozy, but comfortable, with enough space. It's well equipped with linens, kitchen equipment and pantry staples, and even a few tools. The Eiffel Tower view is such a bonus, especially at night!
The building itself feels very secure, with a code for entry, and a top floor apartment. It's a quiet building in a generally bustling neighborhood. The neighborhood feels safe, as well, and is full of shops, cafes, and bakeries. There are two nearby metro stations, making travel inexpensive and convenient. Using Maps for directions will give you metro routes as an option.
Adrien is a fabulous host, very attentive and welcoming.
My only observation that may impact your stay is that the elevator goes to the 5th floor, leaving you with a spiral staircase to access the apartment. Not an issue for my group, but something to note.
Overall, we had an excellent stay, and would love to return!