The African migrants, who came from Senegal, Mali, Liberia and Guinea, expressed their satisfaction at the medical and psychological care provided at the centre.
Some of them told APS that they were among 38 people, who set sail from the Moroccan city Nador aboard an inflatable boat in a bid to reach the Spanish coasts.
Each of them paid €2,000 to Moroccan smugglers before setting sail, they said.
They explained how their boat veered from its route for five days due to bad weather conditions, before they were rescued off Cape Falcon by Algerian Coastguards and Civil Protection.
During the rescue operation, fifteen out of the 38 illegal migrants were found dead aboard the boat, while the others were reported missing.