Rent Come September (1961)

Every September, a successful New York businessman (Rock Hudson) visits his Italian villa to relax and to romance his Roman girlfriend (Gina Lollobrigida). But after arriving unannounced one July day, he's in for a huge surprise! During his absence, the luxurious home has become a hotel. What's more, the current guest list accommodates a gaggle of American girls with persistent boys pining after them. In a desperate attempt to regain control, Hudson manages to lose his privacy, his girlfriend and his mind until he comes up with a plan of his own.