Puerto Sassari is a borough of San Luis, Prasia, located in the south of the city. Puerto Sassari is the city's main port, and is also a cultural centre of the city, with many restaurants, bars and theaters being located in the borough. The ruins of the Fortaleza de San Luis are also situated in Puerto Sassari.
| Barrios of San Luis |
| Aravaca - Carcelén - Cuerabaca - El Centro - Esquina - Neuquén - Pasadiso - Puerto Guillerme Puerto Sassari - San Lorenzo - San Rafael - Villa Elisa - Villa García - Villa Mateo |