The flat is clean, stylish, and comes with well appointed bedding. It sits in a lively square within the Latin quarter that is just steps to shops and restaurants. We stayed for 5 days with our 16 month old and really like the flat. Our stay was over a weekend and Friday and Saturday there was some noticeable street noise from the local area, but thats comes with the territory of being in the city center. Also the noise was not enough to disrupt our stay or the sleep of our small child. That said, you may want to pack some ear plugs just in case.
I would highly recommend it for families but the layout of the second bedroom, which can only be accessed from the first bedroom, might be a bit awkward for couples.
Lily was great and quick to respond before and during our stay.