Lovely place to stay! My wife and I stayed here with our two sons (5, 3) and my parents. It was a little tight but it worked really well for us! Layout and setup to the flat works really well and everyone we came across was really nice.
As Americans (that live in the UK) it was very nice to stay in a neighborhood that was away from all of the tourist places, but still have great access to them. There were numerous cafe's, patisseries, and other basic shops at our doorstep. There was also a nice outdoor food market, cheese shop, butcher, fresh fish shop, and numerous wine shops just down the street! That was in addition to the numerous supermarkets (small and large) that were nearby.
I saw one recent review about the noise and it really isn't that bad. Our 2 sons stayed in the bedroom that would be considered the 'noisier' of rooms due to it facing the street and they had ZERO issues sleeping. If you want to have a complete silent night then you probably shouldn't be trying to stay inside a major city!
Lovely place, would love to stay again should we come back to Paris! Thanks again!