La Nipote (1974)

Adele, a beautiful and orphaned young woman accepts the invitation to spend the summer at her uncle's magnificent Italian villa. However, right from the start, Adele will realise that--more than anything else in the world--the household's lustful inhabitants have other things in mind. As a matter of fact, Adele's uncle, Luigi, prefers chasing Doris, the maid. On the other hand, Zoraide, a former stripper and Luigi's wife, enjoys having fun with Piero, a friend of the family. Lastly, Antonio, Luigi's virginal adolescent son, sees in Doris a willing tutor. Honestly, is this a place for a beautiful young niece?