Several airlines fly from several countries to Alicante (a 30 min drive to "La Azotea").
The website google flights is very useful to find the best flights.
TIP: From experience we know that it is best to book as early as possible. (minimum 6 months)
Renting a car on Alicante airport is very easy and is possible via several websites (skyscanner, cardelmar, rentalcars,...)
Different companies are located inside the terminal
If you don't want to lose time while looking for the apartment, don't want to pay extra for extra drivers and would love a free shuttle from and to the airport: check www.rtscarhire.eu.
* The start location for these calculations is Brussels.