The location is 5++++ stars, with 3 supermarkets, 3 patisseries, pharmacies, bars and all restaurants you can imagine within incredibly close walking distance. The host is very responsive to all questions and the place is excellent for a larger group. Showers are dorm style downstairs but not a problem for a family sharing essentially 2 joint apartments.
Only issue is that the Wi-fi in this location needs an upgrade, as once more than 3 people start connecting with their devices (phones, ipad, ets), the speed drops and becomes frustrating to all guests (easy fix with new router!).
Overall the best location you could want if visiting Paris for a few days with a group!