I've just received notification from Olympic, "that from 1st January 2018 a new Overnight Stay Tax will be introduced by
the Government of Greece. This will be payable locally by the individual tourist on checking in to accommodation in Greece
and varies according to the official rating of the accommodation as follows"
Apartments(all categories): €0.50 per room per night.
Hotels: 1-2 star: €0.50 per room per night
3 star: €1.50 per room per night
4 star: €3.00 per room per night
5 star: €4.00 per room per night
Hope this helps those of you going to Symi this year to budget accordingly!
My wife Pam, and I will be visiting in September 2019 with Olympic and recently booked - hence the above info from them.
Petrostoo