We absolutely loved this beautiful apartment. The apartment is very clean, very nicely decorated and perfectly situated in the heart of Marais. We were with 8 people and had no problem sleeping there. The 5 flights were not a problem, since the ceilings are not that high. I would not recommend the apartment though to people above average height (we were all women and children en quite short) since the bedrooms have very very low ceilings and even I (1.50m) bumped my head a few times.