We spent 7 nights in Mikail's apartment and overall loved our stay. It has many more pros than cons and we'd recommend it to others and stay there again ourselves.
PRO: 1. Location! Probably the best location of any apartment we've stayed in our 7 trips to Paris. Ideally located between two metro stations (Trocadero and Passy), with loads of conveniences including two supermarkets, bakeries, restaurants, Laundromat, pharmacies, etc., in easy walking distance. The bedroom and living room are on a courtyard so it was very quiet. It also has cross ventilation because it sits above the building next door. That would be a great asset in the summer.
PRO: 2. Size. The apartment is large and well laid out. OK, we don't like not having a sink in the toilet room but that's common in Europe. And not having a door to the shower/sink room might be weird for a non-couple but it didn't bother us. It was a comfortable space for two adults.
PRO: 3. Communication with host and check-in by his dad, Alain. They are seriously responsive. We had to change our dates a couple of times and Mikail graciously worked with us. We were locked out after check-in because the main door to the building was not working. We texted and talked to Alain and, with the help of a neighbor, we got back in within 30 minutes.
PRO: 4. A view of the Eiffel Tower from the living room!
CON: 1. The size of the bed, which in the listing says is a king. I didn't ask the dimensions before booking, just trusted the listing details. But the bed is large double (140cmx190cm) not a king (180cmx200cm). Since we sleep on a king, this was a major reason I choose this apartment. The bedroom is large enough for a bigger bed. We slept OK, and it was my fault for not verifying the bed dimensions before booking, so lesson learned!
CON: 2. The apartment is well decorated. The host has very pretty collections of mostly Asian objects. But this left no room for us to unpack. I ended up carefully moving some of the objects to the other shelves in the bedroom to make space for our clothes. We also bought a 4 pack a hangers for the rack as it only had 6 wooden ones. I wouldn't consider this apartment small-child-friendly.
OVERALL: This is a large, comfortable apartment in a great location. We enjoyed our 7 nights stay and would definitely stay again, even with the cons.