Due to the strikes in France, we were forced to change our plans twice. Virgile was understanding and most helpful. You will find her easy to work with and most hospitable. The apartment in a very old building is great fun and is quite spacious and comfortable. The location is hard to beat. Being on the top floor (6th floor in U.S., 5th floor in France) it was quiet with a view over the rooftops including the remaining towers of Notre Dame. It is a short 1.5 blocks from Rue Rivoli on a pedestrian section of Rue Saint-Martin. Hard to be more central. With the strike, we easily walked nearly everywhere!
Understand that this is a very old building. Floors creak and bathrooms are very tight in space. Nothing uncomfortable at all and quite serviceable. Just know that you will not find "modern" . Really, this is part of the charm. The elevator is sized for three and is quite reliable. One enters via an interior courtyard and we always felt safe and at ease.
We would return in a heartbeat. We've no criticisms whatsoever. Great experience!