We had a great time staying at Yannick's place in the Marais. The apartment is just as advertised and it was fun to stay on the top floor with beautiful views of the city all around. One thing to consider is that the apartment is on a busy street, so if you are not used to traffic noise at night, you may want to bring ear plugs, especially in the summer when its really nice to open the windows and get a cool breeze.