Upon arrival at CDG, giving myself 1.5 hours to claim luggage, buy a Paris Museum card, and Passé Navigo, I'll have about 5 hours to pass before my TGV train departs (from CDG).
What would you do with this time?
I'm considering checking my bag and taking the RER into the city for a nice meal and a walk. Does anyone recommend a good area for doing this?
I could go right to the heart of the left bank at the S. Michel RER stop, but maybe there's a good area more north of the city, yet fairly near a RER B station.
Regarding restaurants, I would prefer a more casual one as I will be "fresh (or not so) off an overnight flight".