Marie's place was great. Less that 5 mins walk to Gare De Norde which is the main train station that heads to the airport, Parc De Expositions etc. Lots of eateries around and a short uber or train to everything you need in Paris (shopping etc).
The apartment was very secure, in a nice old historic building. It was extremely quiet and I couldn't hear any street noise.
Wifi worked fine and I was able to cook a meal with utensils provided.
Overall a great stay and I recommend Marie's place.