Porto Santoru is in among the many pebbly beaches along the low, rocky coast in the municipality of Lanusei. It is located to the south of Barisoni and to the north of Caletta Pagliuzze Dorate, and has a jetty and the ruins of abandoned buildings which were once used to load the minerals extracted more inland. It shares the natural beauty of the beaches which border it, given by the colour of the crystalline sea and the wild aspect of the rocky coastline.
Porto Santoru is reached from Cagliari along the SS 125 panoramic road as far as the locality of the same name.