The flat is like in the pictures. We were a family of 4, our children slept in the sofa bed perfectly, big and confortable one, and we slept in the bed in the master bedroom.
Well located, close to 2 different underground lines: Saint Denis and Reamur-Sebastopol. Many supermarkets 5 minutes walking that open on Sunday and till 22:00. Also many restaurants nearby.
Area is safe. If you go to Boulevard Saint Denis you can see weird people but it was ok for us. We would repeat again.