The Riviera has trains. Provence has parking. Plan for that from the first booking.
Rent a car
The most useful way to link the Luberon, Valensole, and the Pont du Gard without racing the clock.
Stay in a mas or village
Converted farmhouses and bastides are the classic stay. Gordes, Roussillon, or Les Baux put you in walking distance of dinner.
Time a market morning
Do not arrive on a Monday if your village market is Tuesday. Build the first full day around it.