We are a family of four adults and enjoyed our stay a lot. The apartment is even more spacious than it appears on the pictures and it is well equipped in a high standard. When we were in Paris we were right in the middle of a heat wave with temperatures well above 30 degrees Celsius (90 degrees Fahrenheit). Nevertheless the apartment was not too warm and in the evening we could enjoy the upstairs patio. In addition a dyson fan was provided.
The location is perfect in close proximity to public transport (Gare du Nord and Gare de l'Est) and to the subway. There are enough restaurants, bars and bistros in walking distance so that one has enough places to discover the quarter. However, the neighborhood still feels that there are "real" people living, not too touristy at all.
Daphne was very responsive and answered any questions we had right away. She is indeed a superhost and highly recommended.