The easiest way getting here is by flying to Malaga and then rent a car at the airport. You should then pre-book before you get there. There are many lovely places to visit nearby and a car obviously give you certain freedom. You can park in the locked courtyard when you rent the apartment.
If you do not need a car during your stayin Nerja, you can book a taxi that takes you directly from the airport to the apartment. There are several taxi companies in Nerja that offers the service. You can also take the bus from the airport to Nerja.
There are car rental companies available in Nerja if you do want to make excursions.