Jean-Charles's place is great! Perfectly located in the Marais, close to historic buildings, museums, falafel, and everything else in the center. While small (many studios in Paris are), it is creatively arranged with everything you need! :D Jean-Charles was also very quick at responding to messages, and was very accommodating of our needs (e.g., we arrived late - 11pm - and he still greeted us in person, and during the Fête de la Musique !). Wonderful place to stay!