Le Marais is a beautiful place to stay in Paris. We actually walked from Gare de Lyon (despite the heat during the summer). Convenient location to Metro Saint Paul too! The flat was perfect and felt like a home away from home. Safe neighborhood and convenient to explore for a "local" experience as well as a starting point for someone visiting the main landmarks in Paris. The building is old so a low noise level is expected (appreciated this aspect). Take advantage of Cecile's private driver if needed - especially to CDG.