Never been here before, looking for a reliable & cost effective airport transfer or is it better to hire a car for a one way trip?
If you're hiring a car you may as well hire it for the duration of the holiday. There's so many beautiful places to see on the island. Driving is easy and car hire and fuel are cheap.
Otherwise FirstMinute are a good local company who actually provide the transfer. They're not just a global online booking site like other "transfer" websites.
I concur with what Leyland has stated. 1: car hire around €12 per day small car.
2: taxi transfer €50/55 each way .
3: first minute transfer around €20 each way (you may share with another party ).
Personally for us it's car hire no brainer. Have a great holiday 😎.