We spend 5 days in Sophies appartment and had a very good time there. It was very clean, well equipped with everything that we needed and more then enough space for our small family (in Paris terms ;-).
It was also well suited for our small kid, 1.5 years old. There's an adaptable high chair, some toys and we could let him walk in the appartment without to much fear of him breaking something. Sophie was very helpful in explaining everything to us and she was very quick and responsive from the beginning on.
The appartment's location in the south east of Paris allows to discover things different to the normal tourists spots. It is well connected via Metro, Bus and Tram. The latter two are the transports that you can use with a stroller. There's a huge park with great playground in 10min walking distance, supermarkets and awesome bakeries. Different good food options, also for take-away, are just around the corner. It all helped us to have very good time in Paris.