It is based on the short story The Beckoning Fair One by George Oliver Onions, which I posted about here.
Senses of Cinema says,
the director uses the familiar tropes of the giallo to ask uncomfortable questions of modern society. While in his earlier film Petri probes into what he sees as the empty values of young wealthy bourgeois, in A Quiet Place in the Country he examines the role of the artist; the inescapable dichotomy between art and commerce.DVD Talk calls it a "Brilliant psychological/supernatural horror movie" and concludes with this:
Disturbing, sensational aural/visual experience. Writer/director Elio Petri creates a completely unstable environment for his tale of personal madness, artistic chaos, and supernatural violence. Vanessa Redgrave and Franco Nero are beautiful to look at here. One of a kind. On content alone, I'm giving A Quiet Place in the Country our highest rating here at DVDTalk