From Olbia harbour:
Follow the S.S. 125 from Olbia to Palau (40 km), passing through Arzachena.
When you arrive in Palau, follow the main street (Via Nazionale) until you reach a crossroads. At the crossroads, turn right and go straight along Via Capo d'Orso for about 4 km. When you reach the Bear Rock (Roccia dell'Orso), turn right; after 50 meters, you will arrive to the Porto Mannu residence entrance.
Pass the entrance barrier, take the first road on the left (comparto M) and you will reach villa number 15.