If you arrive from the North of Italy go to the Autostrada A3 Napoli-Pompei-Salerno and exit to C. di Stabia; then you must continue for Sorrento and arrive to Positano.

...if you arrive from the South of Italy, go to the Autostrada Reggio Calabria-Salerno and exit to Salerno; then you must follow the signs for Costiera Amalfitana, arrive to Amalfi, Praiano and at the end you will arrive to Positano.

We are near the most popular square of the city, Piazza dei Mulini.