We had a wonderful couple of days in Paris as a family of four. Marie's apartment is cosy, super clean and had everything we needed.
Marie and her sister provided lots of detail to assist with check-in as they weren't able to be there when we arrived. The apartment is in a great location and even though we stayed during the time of the public transport strike, we were still able to get out and about and access a main line Metro station around 10 minutes walk away (when we weren't zipping around on share scooters - highly recommend for an adrenalin-rush way to get around Paris). Usually the station would be much closer. There is a supermarket and bakery a couple of minutes walk away and plenty of local restaurants.
The only thing it would be worth being aware of is that the apartment is quite small, probably pretty normal for Paris accommodation. While it fitted us 4 adults, there is 1 bedroom up very steep stairs - be prepared if heavy luggage - and the extra sofa bed (that we needed to use as our adult kids didn't want to share a bed - strangely) is in the main living area. Using the kitchen table fully open for 4 people so you can all sit somewhere when at home, means not much moving space. But we managed and amongst all the positives really none of this is a major drama - I think just good to be prepared for.
We would definitely recommend Marie's place, and stay again if the opportunity arose. The beds are super comfy, the apartment warm and friendly. Thanks Marie!