This apartment is charming and furnished with amazing antiques that bring home that you are in Paris(!). The charm of the building goes hand in hand with its age, unfortunately. There was a building-wide plumbing issue that the hosts could not control, but they did a good job of communicating with us about it.
The WiFi connection is very good. There is a small private yard (!) often filled with birdsong that was wonderful for morning coffee or relaxing in the late afternoon. A washing machine and drying rack made laundry very easy to do, and if more robust drying is required, there is a laundromat around the corner. The location in the 16th arrondissement was perfect for us: amazingly quiet and a short walk to sporting areas of interest like Roland Garros (French Open) and Parc des Princes (Women’s World Cup). Two metro stops (different lines) are short walks away. There is a grocery store around the corner, as well as of course neighborhood flower shops, bakeries, butchers and wine shops. A shady dirt jogging path in a nature area is literally across the street. There are many, many restaurants in the adjacent square. The Marmottan Monet Museum is a 15 minute walk away. Bertrand and his mother Catherine were very gracious, friendly hosts and helped us greatly with an unplanned FedEx delivery. We did not know about it ahead of time, but they paid a considerable tariff on our behalf, which we of course repaid as soon as possible.
I would mention a few mild cautions. The apartment literally can sleep 6 as is described, but more than 4 people feels crowded. There is a back hallway that is necessary to use if one does not want to walk through one bedroom to get to the other. The hosts may sometimes also use the hallway, so a feeling of complete privacy is not possible (this is balanced by the close proximity of the hosts for communication and problem-solving). The kitchen knives are terribly dull. Sharpening or replacing them would greatly improve the experience of cooking in the apartment. Despite these mild criticisms, we really enjoyed our stay!