I spent 7 nights in Hugues’s apartement with my parents, my husband and our 1 year old baby. And it was great. First of all, it’s the biggest apartement I’ve ever seen (or imagined) in Paris. Very well and stylish equipped. And there are lots and lots of toys, books for a baby/child. There is also a seperate room for baby/child including a cot.
However, the floor creaks so noisily, so if you have a noise-sensitive baby; you may renconsider. We didn’t walk or use the bathroom at nights.
From the location perspective; the house has the perfect location, just across the Gare Du Nord which enables easy transportation. Besides, it’s walking distance away from Sacre Coeur, Moulin Rouge or Bld d’Anvers where there are many lovely cafes, bars.