We booked a Resorthoppa (speedy shuttle) airport transfer directly online before we left the UK for £29 for 2 people.
Both transfers were reliable and efficient and we'd have no hesitation in recommending this service to anyone.
There were a few drop-off's and pick-ups both ways but both transfers were stress free and reliable. The instructions for arrival and for departure confirmation were easy and accurate. We were picked up 5 minutes before the due time.
If booking a holiday independently or through Travel Republic for example, it's cheaper to book directly with Resorthoppa.