Very easy to get to the flat from Paris Gare du Nord. "Notre Dame de Lorette" area is a very nice area with a lot of small shops, cafe but not in a touristic way. It is easy from this area to connect to various places of Paris via the metro.
The flat by itself is really nice, effectively very shiny and very calm. We had a really nice 1 week stay there and thank you to Olivier who hosted us in his place.