This is a really nice family apartment, two bathrooms/toilets add a lot to the comfort. Mathieu and Constance were incredibly kind and welcoming, helping us already before our trip and supporting during it. Both check-in and -out were flexible and customed to meet our needs.
The apartment is easy to reach from CDG airport by RER B train. The essentials of city centre are just 5 - 15 minutes train/subway ride away once you get to the stations nearby. If you want to walk as little as possible, you can take buses to these stations, the stops are only one block away.
The lack of elevator was not an issue for us, but guests finding it concerning might want to consider other options. We also slept well without air conditioning in spite of the higher than 30 degrees centigrade day temperatures, the fans available helped a lot. We really enjoyed our stay, and hope to be able to come back some day!