This is one of the best hostels I've ever been to regarding the room, size and comfort had little to envy to a hotel room. It had been recently refurbished, spacious, a/c, TV, and all the rooms have their own ensuite private bathroom.
The only con is that appart from a common microwave and a coffee vending machine, there is nothing more there. No restaurant, cafeteria or breakfast available.
Location is good, close to ruzafa neighborhood and the city of arts and sciences. Well connected to the city center and the beach by bus.