You can get on the train at Malaga Airport to Benalmadena - Arroyo de la Miel station heading towards Fuengirola.  when you get off the train its a straight walk through town to the apartments.  3rd roundabout, turn right down Avenida de Bonanza, walk a coupe of hundred yards and you will see a hedge lined gates with the Piscis and Acuario sign over the top on the left side of the road, this is the back gate. You've Arrived!!!