We had a great stay at Nicolas's apartment. The location is phenomenal, very close to the great old streets of Marais with lovely shops, restaurants, galleries and museums. It's a very bright and modern apartment overlooking a lovely church and the streets of Paris. It's small but makes very good use of space. We had two adults and two children age 12 and 14. In addition to master bed there is a loft bed and a fold out couch. The four flights of stairs is a workout but we welcomed it after all that delicious French food. Also, as in most Parisian flats there is no AC but the big window provided adequate ventilation and cool air at night although we were fortunate to have reasonably cool nights in Paris. Check in and departure were very easy.