We have been at Nicolas' apartment with our 5 children and enjoyed a whole week here. Everything was fine, Nicolas prepared a very informative summary of the location, the neighborhood and gave plenty of good recommendations. The area near Canal St. Martin was excellent, the metro station very close, many restaurants, supermarkets and a bakery to die for.
The apartment fulfilled our needs, we found it as described here at airbnb. It has a specific atmosphere which we liked a lot.