Nicolas’ apartment in the Marais was perfect - perfect location, comfortable bed, great shower and bathroom, and a good kitchen for basic needs. I would definitely recommend it and hope to stay there again myself. The only caution I would offer is to people who have a sensitivity to moisture, as the apartment is a bit below ground level. While Nicolas has a dehumidifier which I ran constantly, there is still quite a bit of dampness in the air. Otherwise, everything was great and I spent a lovely week in Paris with easy access to every part of the city without having to travel too far. I walked to everything with an occasional Metro or bus ride to especially distant spots. Nicolas was responsive to my questions and, though I didn’t meet him, he lives nearby so is available if needed.