Karine's place was awesome. We were picky about finding a perfect location to explore Paris and were so happy with this choice. The apartment is right in the heart of Le Marais, but high enough above the street to feel sheltered from the bustle once you're home. There are cafes, bars, and shops literally right outside the big red doors to the building.
Karine met us for check in, didn't make a fuss that we were late, and was quick to respond when I had a question about the boiler. All in all a great stay.