Marc was a very friendly host and met us at the entrance when we arrived. He explained detailedly where everything in the apartment was located etc.
You can not stay more central in Paris, especially at such a cost. The only problem was the elevator which did only fit one person and the apartment is located on the 7th floor, but that is the only negative criticism I have towards the place.
Jean-Marc even hadled some unconvinence that happened from out side very professionally and polite.
Can definitely recommend.