My wife and I (in our 60s) are planning and looking forward to a trip to Avignon next March. We'll travel by train from CDG. We are looking at an apartment within the city walls. After some time relaxing and exploring on foot we'd like to rent a car (a first for us in France) to visit nearby villages. Parking at the apartment is OK as long as we have a small car, but one of our concerns is will it be difficult/frustrating to get in and out of the city for these excursions? If it is, is there any other place accessible by train that would make a better base? Thanks for any information you can give us!