Le Marais is beautiful and the location is very good from this point. One major issue for us was the noise from the falafel stand right below the window. This was exacerbated by the heatwave in Paris meaning that we couldn't close the windows. If the windows were closed, the noise was tolerable, but then too hot! Then there is the noise of the street cleaners and delivery trucks in the morning. Aside from the noise, which might not be such an issue outside of Summer, we were happy with the place.