Our stay here was really wonderful. They are a really nice couple and fantastically nice hosts. If you also have decent French language skills you can benefit from very interesting conversations. Sometimes their grandchild visited during the day and is really charming, well behaved and sweet.
The location could not be better or more interesting. One can walk from the apartment to nearly every site in Paris and really enjoy the explorations. It is also easy to get there from the airport and to the train stations.
The apartment is bright, clean, has a very nice charming old Paris character with the addition of tasteful updates. The bedroom and shower/wash room are private and near the apartment entrance, as is the shared W.C. room. So it nearly functions as a private suite.
The apartment is accessible by elevator and it is very quiet. You will not be kept awake by street noise nor from neighbors. We found everything very comfortable here. Perhaps, if you are a very large framed couple used to a king or queen size bed, you may find the bed a bit cozy but for us it was fine. In the morning a very nice French breakfast is provided, which you can enjoy looking out to a nice view of the city.
Liliane also provided many great recommendations for places to go during the day and night, places to dine and nearby provisions shops, all well organized in a specially made notebook for reference.