Unless you need all of La Rochelle's tarmac runway, you might find St Pierre d'Oleron (LFDP) more relaxing for an overnight stop. A decent hotel with pool and beach
http://www.hoteliledelumiere-oleron.com/ is a short taxi-ride from the airport, and good seafood within walking distance from the hotel. Other recollections are a bit fuzzy...
ATB, Peter.