Hello @Elena87 and @Kolinda0,
Lovely to meet you both, my name is Lizzie.
As @Victoria57 mentioned this sounds like the euro difference is due to the currency exchange. More information on this can be found in the Host's Terms of Service. For general information, this link can be found on all Airbnb page footers 'Terms & Privacy'.
For a quick read, I have included a screenshot of this page for more details:
I hope this helps.
Lizzie
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