On the D93 halfway Crest and Die take the exit to Aurel (D357). Follow the signs Aurel. Once you enter the agglomeration of Aurel the signs Mas Belle Cour will show you the way.
BEWARE BEFORE DEPARTURE!
100 kilometer to the south there is another village named Aurel in the Vaucluse department (zip code 84390). Please make sure to plan your route to Aurel in the Drôme department (zip code 26340) near Saillans.