One word...Monmatre! You could not ask for a better location if you want the quintessential French vibe of the arts, cafes, patisseries and bohemian chic fashion. Also, it's walking distance to the Moulin Rouge!
Kajsa is wonderful attentive and helpful. I love that Kajsa lists that there are six flights of stairs so we were well-prepared. We just made a habit of going in and out only once a day - easy to stay out all day in such a beautiful city!