Sisters Ros and Elizabeth want to retire together to their dream home near Bergerac in France. The Dordogne is famous for its wine, warm summers, castles and green forests. Plus, on the banks of the river, Bergerac's old town offers charming cafes and shops for locals and tourists alike. Lee Juggurnauth shows Ros and Elizabeth five options for their maximum budget of £350,000, from a grand country home and picture-perfection to a place ticking boxes by the minute