This is a lovely apartment in a good location - an easy walk from Gare de Nord, 25 minutes walk/amble down to the Seine, and pelnty of metro/bus stops around. Sarah responded quickly to emails, provided a cot and suggested places for us to eat - Albion was very good. The apartment is spacious and well equipped and having the terrace in summer was great. We were a party of 5 adults and 3 children and there was enough living/dining space for us all, although be aware that while the main bedroom is spacious, the second double literally has room for a double bed and nothing else (the other two children's rooms are singles, but one fitted a single bed and a cot, the other has a single bed and another single bed that pulls out from underneath it). The road is quiet, but there are shops and restaurants just a few minutes walk away, so very convenient.
There were a few issues after we left regarding a bin and a toy car - they were quickly resolved.