I could answer you, but I don't know the answer because I haven't found a single free sunbed. It's so crowded that if you arrive after 10:00 am...it's all useless...a large part of the sunbeds belong to the big hotels on the beach...the rest are too few and not enough even for those staying at guesthouses...In the rest of the island, a pair of deckchairs and an umbrella cost on average between 10 and 20 euros last year