We stayed here for 8 days and loved every moment. Fernando is very responsive and helpful. Apartment is on ground floor of a 1916 building. Tasteful modern renovation with some original features (exposed brick wall, part of an old doorway). Useful amenities: washing machine, big fridge, modern kitchen if you want to eat at home. Gets chilly in winter months, despite Fernando kindly supplying space heaters. Not a criticism, this is typical of Spanish houses, so just bring some sweaters!
El Cabanyal is a stunning district of 2 or 3 storey houses, facades of colored tiles and painted stucco. Ten minute walk to beach. Lots of bistros and cafes. Metro to Old Town takes 30 mins. We would definitely stay here again.