Doubling as Arica's surfer central, this is one of the town's top hostels, with a variety of clean rooms, a great open-air communal area, 24-hour hot water and laundry service. There's a shuttle service to the beaches in winter, and staff will hook you up with surf classes and equipment rental.
You can also hire bikes, book tours (national-park excursions) and go parasailing or scuba diving.