We stayed there for 4 days with our 10 month old baby. The location is absolutely amazing as you are just a short foot walk away from some of Paris' most famous attractions and you'll have plenty of restaurants and Cafes just in front of the door (The reception of the baby phone even worked to a couple of restaurants). The spacious flat is very charming, modern and well equipped for a city trip. Being that central also means it's not very quiet though, especially at the weekend (People noise until early morning and then rubbish collection between 5 and 6am). It's ok if the windows are closed though. It's not very Pram friendly as the entrance and staircase is very narrow and there is no space to leave it on the ground floor, so we had to carry it up every time to the 4th floor. Overall it's an amazing flat and you'll have a great time staying there and explore Paris.