Don't know if anyone is interested. We took a taxi from Georgioupolis square to Kokalas apartments due to mobility problems & taxi driver would not take any payment due to short distance. As we are returning next year & have booked privately I enquired about airport transfers. Driver Markos said that they do transfers up to 4 people for 55 euros each way which we found to be great value. You can contact him at firstname.lastname@example.org. Wish we had this info previously as some of our party this year travelled independantly & paid a lot more for their private transfers.