Robinson Und Seine Wilden Sklavinnen (1971)

aka’s: Robinson And His Tempestuous Slaves/Trois Filles Nues Dans L’île De Robinson

Poor old Robinson (Yehuda Barkan) has a boring life at home with a terrible mother-in-law and an annoying housewife, and is miserable at work too. One day, he decides to retire from urban life with 3 very nice girls on an island. Complications ensue as cannibals are discovered on the island. Also with Andrea Rau, Anne Libert and Ingeborg Steinbach. Directed By Jess Franco. (In German language, with English subtitles).