We had a great stay in Christian's apartment! It was clean, spacious, and in a great central location. We were easily able to walk to the RER, Notre Dame, Luxembourg Gardens, and the Louvre. We also had no problems getting to the apartment from the airport since the RER station is so close by.
Christian was a very accommodating host and was available to answer any questions we had. We ran into a problem with the air conditioner and he stopped by to fix it for us which was great. He also provided thorough instructions and recommendations in the apartment which we thought were really helpful.
I would definitely stay here again!