Xavier was fantastic, very responsive and flexible with our late arrival. The apartment is quite small, but well-supplied with fans, adapters, a drying rack, and a washer/dryer unit.
The Wi-Fi worked perfectly. The flat is conveniently located and doesn't get road noise. Unfortunately, like almost all of Paris, there is no real air conditioning, and the third floor got extremely hot due to the weather. The only option was to leave the windows open, and a crying baby in a nearby flat kept us up half the night a couple times. We did use the projector to watch Netflix one night, so that was fun. All in all, a great place for 3-5 tourists.