The coordinates given in the listing don’t respond to the cache location.
To find the cache, you must do a little homework: Since you are now standing on Greek territory, let’s turn geocaching into Greek. Not into the Greek language, but into the Greek numbers.
The coordinates of the cache are the following:
Please be extremely careful while searching. An airport is quite a sensitive area nowadays and we wouldn’t like to cause any problems or get the cache lost.
The cache is a 5 cm diameter round canister supplied with a strong magnet. It contains only the logbook, so don’t forget to bring your own pen.
Have a nice trip!
You can check your answers for this puzzle on Geochecker.com.