FROM THE AIRPORT: traintube to the central station and from buses hubs take bus number 101, 102, 106, 107 getting off in Piazza San Domenico/Vucciria. Opposite the bus stop you find via Bari.
If you have a TomTom check address: PALERMO - via BARI 7
or insert GPS coordinates: Latitude 38°7'6'N - Longitude 13°21'42'E