Istranka

Family-run since the 1960s, Istranka is where Opatija locals go when they want proper Istrian food without the tourist markup. The fuži with truffles is the move here — rich, earthy, and made the way your Croatian grandma would if she had access to fresh Motovun truffles. The stone interior feels like eating in someone's very cool cellar. Cash-friendly prices, big portions.