We had a great stay in Patrick's apartment. Benoit met us when we arrived and was very helpful with great recommendations for restaurants, supermarkets, etc.
The apartment is spacious for a big city in Europe, and was very clean. It was stocked with everything needed. As other reviewers noted, the stairs are tough (99 stairs!) - but we are young and able to make the climb, and felt the apartment was worth it.
Amazing location - only a very short walk to the Metro, restaurants, shopping, and you can see Notre Dame just around the corner. We would highly recommend this apartment for the space, location, and cleanliness.