Lübtheen is a village near Hamburg. Today it has about 4.600 inhabitants and no cinema.
The postcard was published in 1979.
I couldn't find much information about the cinema on the postcard. allekinos.com writes, the cinema was opened on June 15th, 1919 and closed about 1990. There weren't shown movies every day. It seems the hall belonged to the restaurant Deutsches Haus at the right.