We stayed about a week in this apartment with three kids. Since they did the pictures they added another small bed below the high bed which was perfect to sleep the three kids. They also added a couch in the living room. The dining table has four chairs but it was no problem to add another chair from a different room to fit comfortable 5 or even 6.
The apartment has nice french flair with authentic floors and is nicely decorated. They rent out the apartment they normally use themselves, so it's nicely equipped for cooking and everything you need including dishwasher. The drawback of the apartment is that you hear the neighbors and they hear you.
The location is close to metro which brings you to all the sights in Paris within 15 to 20 min. Stephanie speaks English which makes the communication easy and was really fast in responding. We really enjoyed our stay and can just recommend it.