I met a few Poles working as hotel attendants during my stay in Iceland earlier this year.

I had to call an attendant up to understand how in the word to turn the shower on (there was a long skinny faucet the water poured into the tub that had to be turned clockwise) which she said she was confused by it too and had someone show her. It was in an older Icelandic hotel that used their natural hot water (sulphur stinky but i didnt mind) from the ground for showering or any type of hot water use.