We had a good time staying in this apartment during our 5 days in Paris. The location is very convenient, literally a few steps away from a metro station and a grocery store. A lot of decent bakeries and restaurants full of local people are nearby. It is at the corner of busy streets, but not noisy when windows are closed. The apartment is clean, roomy, stocked with comfortable furniture, necessary equipment and kitchenware. The apartment is inside an old building. Navigating up through narrow whirling stairs with large luggage could be a little hard, but that is part of experience why choosing here (or in Paris).
The host was professional, accommodative, responded to any questions quickly. Agent service was used to greet (we had to call them to find where the apartment exactly was) and to physically help on any needs. We found them friendly too.
We did have two issues during our stay. Shower drainage in one bathroom was pretty much clogged. We were able to use the other shower though. We were unable to unlock a shared entrance door from inside to go out, when it was locked from the outside. The host had to send an agent to free us.
Overall, we enjoyed our stay in this apartment. It added an interestingly good experience to our Paris visit.