Die Wirtin zur Goldenen Krone(1955)

Since the capable landlady Maria bears a striking resemblance to the ruler of a miniature state, she is tasked with playing the role of princess during her absence. The deceitful and corrupt ministers attempt to seize the opportunity and gain one-sided advantages for themselves. When the son of the real princess falls in love with Maria's daughter and wants to marry her, a national crisis almost erupts.