I think Iratus’s hint is oversimplified. The Greek alphabet has already been mentioned, so we can help by saying that the location is spelled out letter by letter, where each of these letters is in the Greek alphabet but represented by the English version of its name.
But I didn’t come on to answer that potential difficulty. I just wanted to say that I had the satisfaction of completing this puzzle last night. For that I have to thank my educational background in both classics and maths, but also the very helpful hints on this forum.
I welcome the unusually helpful hints, and hope that they will continue whenever a puzzle seems to be on the tough side for solvers who may simply not have come across some important element in the theme.
But I have sympathy with those who say this puzzle was unfair. We don’t want to turn away potential solvers. And the younger generations are far less likely to know Greek than we oldies were!