Cecilia is such a great host! Very responsive through the app, and whenever we needed something she was quick to reply. The place was exactly as advertised, compact, but still sufficiently large for our family, and very stylish. The location is close to Monmartre (although be prepared for a steep climb, if you want to go to Sacre Coeur, as it is at the top of the hill). Plenty of restaurants and shops in an easy walking distance. Square des Batignolles and the surrounding area turned out to be a hidden gem (15 min. walk or 2 bus stops). Overall, very Parisian neighborhood, without being too touristy. And the metro station Guy Moquet is next door for exploring Paris.
One comment regarding summer travel. The week we were visiting happened to be one of the hottest summer weeks on record (38 - 43 C for 3 or 4 days). As the apartment had no AC, it was very difficult to stay inside or even sleep, as the heat was unbearable. Not really Cecilia's fault, as I understand that a lot of apartments do not have AC's in Paris as this weather is unusual. In fact, Cecilia was very nice and inquired a few times about our well being. Just something to keep in mind if you're traveling with older people or kids during peak summer months.