They were amazing hosts. Very generous with their space and resources. The apartment is kept very clean, their kitchen has plenty of space for cooking, and the room is just great. The bed is comfortable, and I appreciated that there was zero noise outside at night. They are lucky to live in a very quiet and peaceful part of Paris.
I highly recommend staying here. It's true they are on the 6th floor (no lift), but you only have to bring your bags up the stairs once and they are happy to help you with that. I have asthma and I had no trouble with the stairs. I would definitely stay here again.