Our stay at Nathalie's was great. Communicating for check-in and check-out was simple and easy, and she provided some helpful tips to help orient us in the neighborhood.
The apartment is very nice, cute, and cozy. The location is perfect for walking the Marais neighborhood (and even those nearby). Such great shops and eats in just about any direction, and close proximity to several museums and sights by foot or by car/metro. My feet are tired from all the exploring!
The only caution is there is road noise at night, but that may be inevitable in such a bustling neighborhood where apartments face the street from above the shops.