We had a great time staying at Lucies place. The communication, check-in and check-out were super easy and Lucie gave some great recommendations.
The flat is very nice and big enough for two, the bathroom rather small but that's to expect from a city apartement. You can hear the upstairs neighbors walking around, but otherwise the flat is very quiet, no traffic noise or anything.
The flat is perfectly located. Everything you need within short foot distance: Sacre coeur (also nice just to sit in the park and enjoy the sun),nice restaurants, shops, bakery, cafés, metrostation.
We can recommend Lucies place to anyone wanting to explore Paris!