knickerbocker

rjs,

We were in the 11th when we spent a week in Paris in '07. The Métro made the location of little consequence. However, I'd certainly recommend that you recover somewhat from your jetlag before you endeavour to be driving anywhere.

ssander

I concur with knickerbocker about not driving while suffering jet lag. Back in 1966, I made that mistake and crashed my rented Citroen into a sign piling 1 hour out of Paris. No injuries and only body damage to the car, but we had to wait three days while the car got repaired in Lille and it cost us a couple of hundred bucks in deductible. (Not a total loss, because we hitchhiked and spent an overnight in Brussels.)

SS

tod

rjs - Even though we had spent over a week in Paris after arriving at CDG, we still could not face driving out of Paris so hopped on a train to Chartres. Visited this magnificent cathedral and picked up our hire car and headed for Normandy.
We booked nothing ahead and saw there was no need.
If you are into WW11 history I can't imagine not going to the little town of Avranches. Here General George Paton saved the inhabitants from the enemy. They still love him so much his statue is placed on the towns traffic round-a-bout, and we even got to stay at the George Paton Hotel. Old, gaudy floral wallpaper, but fine for one night. There is a nicer hotel a few doors away.
From here we went to Mont Michel and dropped the car off in St.Malo as we were taking the ferry to Guernsey.

I'm sure you can get a hire company that doesn't expect you to return the vehicle. Catch a train back to Paris.
Best of luck.
If you want to stay right in the middle of the action heres a hotel we stayed at last year:
http://www.hotel-hospitel.com/ang/accueil.htm