From Rome: take the A1 Autostrada south towards Napoli. From the A1 in Naples pick up the A3 south to Salerno/Reggio Calabria. Incidentally, the junction of the A1-A3 is by the Naples Capodichino airport and you have to go always straight away, not to turn picking up the A30 south to Salerno.

From Naples Capodichino Airport: follow the green signs for the highway and then take the A3 south Salerno/Reggio Calabria.

From South of Campania: take the A3 North Salerno/Reggio Calabria.

In all cases:

Exit the A3 at Vietri Sul Mare and follow the indication for “Costiera Amalfitana” and go through 163 toward Amalfi and stop in Atrani. The parking is Luna rossa just passing the tunnel