Christine's studio was perfect for our stay in Paris. It's very charming and we were impressed how clean, organized and carefully detailed it was. The size was ideal for two people. The kitchen and bathroom are great.
It's located in the Marais, a very nice neighbourhood and there're many walking distance restaurants and attractions. Christine also leaves a complete guide of how to use everything in the studio with many place's recommendations.
The only thing that might be a issue for some some people is the fact the studio's in the ground floor, so it is possible to hear the sound of the main gate opening/closing, but aside from that it was very silent.