Excellent location, beautiful space, with all the amenities we needed. I particularly loved the global eclectic design details, and the plentiful cozy quilts and blankets. The beds were very comfortable. Even though the apartment is centrally located (just a couple of blocks to Notre Dame, Shakespeare & Company and the beautiful Luxembourg Gardens), there is very little street noise.
Kelly was an excellent host. We didn't get to meet her in person but she was very communicative and provided everything we needed for easy travel. We were greeted by her assistant, Vincent, who was very helpful and made sure we had everything we needed.
The stairs are real. We counted 77 stairs up a narrow winding staircase. It was not a problem, and we enjoyed being high up (I think this helped with the noise insulation), but definitely take this into consideration if you are looking for ease of access. It is definitely a better fit for travelers who plan to leave in the morning and be gone all day sight-seeing, rather than coming back to the apartment several times a day.
The bathroom was clean, relatively spacious, and had plenty of towels and toilet paper. I enjoyed taking baths in the tub, as the water filled quickly and drained quietly. Showers were a bit tricky, as there is a cross beam over the tub right next to the shower head. If you are tall, you will have to be careful to avoid smacking your head (I hit my head, and I am only 5'3").
There was a bit of a perfumey cleaning smell when we arrived, but it went away when we opened the bathroom and living room windows to allow for a cross breeze.
The upstairs bed is very comfortable. Again, keep in mind that the cross beams and narrow staircase will make this sleeping arrangement challenging for people who are tall or less mobile. But we were very comfortable.
Our group of 4, with all our various opinions and preferences, were all very happy with our stay.