The easiest way to rent a car for Hacienda Del Alamo is by pre booking and picking your car up on arrival at the airport.
With Europcar you can pick up the car and drop it off at another for example fly to Murcia San Javier pick up the car there and you can return it to Alicante. This offers more options when buying flights.
Cars typically cost around £140 a week but start from £110 but can vary on demand and seasons.