We loved Marianne's flat! It's located on a mostly pedestrian street lined with classic French cafe's and shops. It's also incredibly central, within a short walk to the Les Halles metro station from which you can catch connecting trains to just about anywhere since its a major metro hub and RER (regional rail) stop. The flat itself is classy and well decorated with the most comfortable living room rug I've ever napped on. Marianne is very friendly and communicative host and we had 0 problems the entire time.