The apartment is very very nice, small but comfortable for a family with two children. The kitchen is well equipped, with anything we needed. Maybe the only drawback is the bathroom; the point is that the shower is just in the middle, and when taking a shower everything is getting wet, which is not very practical when you are a family of four people.
The apartment is very convenient, with a metro station with two metro lines (2 and 11) just out of the door.
Sophie has been very kind and helpful in explaining the neighborhood and other Paris's areas. She has been welcoming and had prepared for us a small dossier with many useful information, expecially tailored for children... Communication was easy, and she met our needs in terms of arrival and departure time.
We would reccomend this apartment!
Just take into account that it is at the fourth floor with no lift; we asked it before, so no surprise, but maybe it's better to say it.