This is a wonderful apartment in a great location. Everything you need is nearby and you can walk to Montmartre and take the metro to anywhere else. It is also very, very handy for the Gare du Nord. There are many restaurants, bakeries, cafes and supermarkets within walking distances. Be aware that because there are so many amenities nearby, it can be noisy if you sleep with the windows open, but this is the same for anywhere in this location.
The apartment itself is on the 4th floor, and there is no elevator. However, the building is stunning. The apartment is well equipped with everything you need for a great stay in Paris.
Sylvie is a wonderful host and answered all my messages quickly and efficiently.
I would love to stay here again if I return to Paris.