Langrishe, Go Down (1978)

In the late 1930s, three reclusive middle-aged spinster sisters live on their run down family estate in Ireland. Otto Beck, a perpetual graduate student from Bavaria with a habit of making pompous declamations, rents the back lodge to work on his esoteric thesis. Imogen Langrishe, the least repressed of the sisters, begins an affair with Otto. Imogen takes the love affair seriously, but Otto just enjoys the cheap lodging and the comfort of Imogen.