The apartment is wonderful. It is nicely decorated and provides a good range of high quality amenities. That being said, our favourite aspect of the apartment was the location, it is very central and so within a few steps you'll find yourself in the heart of Le Marais. Despite this, to get to the apartment you have to wander down a quieter street and through a gated (and quite charming) courtyard before entering the flat - it felt very safe and it was silent during the night. Thanks to this, and the blackout curtains and a very comfortable bed, we slept very well!
Claire was very polite and helpful, she provided all the info we needed for easy self check-in via Airbnb messenger, and whilst we had no issues during our stay, I got the impression she would have been happy (and quick) to help, should something have arisen.
All in all - don't hesitate to stay here if you get the chance, we would certainly love to go back!