A simple cache placed with permission at one of the more popular local resturants.
For those who may not speak Polish, "Szczęśliwy mały dom" translates to "Happy little house".
Fun Fact: It was the Polish immigrants that are credited with saving Hadley’s farmland as they worked the fine Hadley soil back into fertility.
While going after the CC there may be muggles about, and possibly a few of the restaurant staff. As any good geocacher I have faith you'll outwait and/or outwit the muggle(s). As far as the restaurant staff goes, they all know the CC's there and won't pay you much mind as you make the find.
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Congratulations to AB1RS for FTF! 😀