I found a total of 19 resorts in Spain in the last half of May using RCI Points. About 5-6 in/near Malaga Obviously, the quality/size was all over the map, but there is availability, and the best resorts will fill first.
We have stayed at Somni de Cambrils. Not exactly 'deluxe', but serviceable as a base to visit the area. There is a 1st C. Roman villa being excavated across the street and the town has several Michelin starred restaurants. We got along fine without a car. - about 5 blocks from the train station and 2-3 from the beach. Supermarket 1/2 mile away.