We had a fantastic stay and would highly recommend this flat to other guests. Cute and cozy, with plenty of room for a family of four (using the two fold-out armchairs in the second bedroom). The bathroom is small, but functional, and you get used to it.
The central location is amazing, with Bastille Metro just a few yards away, and tourist sites like Notre Dame and the Louvre just a few stops away. There was some night noise the first night or two (Friday and Saturday) but nothing after that, and not more than one would expect from a city centre apartment. Cyprien was a great host, incredibly responsive, kind, and thoughtful.
Merci, mon ami! A la prochaine!