We had a two weeks in Marc's apartment, which has great views across the rooftops and fills with sun through the large windows. You need to be fairly fit to climb the 5 flights several times each day (there is no lift), but once there it is a lovely apartment that makes you feel you are living the life in Paris. Marc was very helpful and responsive. The location is perfect on the edge of the Marais, with several very good and affordable restaurants steps away.