Hello Erno and Sfakia Forum readers.
I thought I'd share this with you. This is a very useful, free to download and use app, which is available in many languages for your smartphone, including Greek. Every 3x3 metre area of the planet has its own three words. Imagine needing emergency medical services 'somewhere' in the Imbros gorge, a friend wants to meet with you 'somewhere' in Hania, or you are stuck up a mountain with no point of reference. Your car has broken down in the night and you have no idea where you are. You have hired a boat and become lost at sea. Emergency services worldwide are now using it.
Go to; https://what3words.com/daring.lion.race
For example, type in; catacomb.loiter.estimating for a well known Sfakian landmark.
I hope you find it of good use.