Wonderful apartment! Thanks so much to Franck for his graciousness in allowing us to check in earlier than intended. Very kind and responsive. Noise is naturally amplified from the street outside bcs of building proximity (ambient sound just bounced off structures incredibly well), but closing the windows muffled all of it for a comfortable night. Four flights of stairs with a tiny lift that was great for luggage. Great fresh markets nearby (Caucases). A couple of blocks, on either side, from 2 metros. Fact that it’s in the 9th near the red light district had no bearing on safety. We completely enjoyed our stay! Would recommend!