We had a great stay and would recommend the apartment to others with children between 8-15. The apartment is most suitable for two adults and two children, in my opinion. Our family of 4 found it quite comfortable, secure, convenient, and tidy. We would stay again, should we return to Paris. We enjoyed easy access to the metro (and use of the Bonjour RATP app recommended by Anton) and a walk along the Seine to Ile de la Citee and Notre Dame. The street is quiet and windows open to a courtyard, which meant for lots of shade in the late afternoon and quiet sleeping conditions. Merci pour tout!!