Switzerland’s 2011 Oscar entry La Petite Chambre by Stéphanie Chuat and Véronique Reymond won the awards for Best Film and Best Screenplay at this year’s Swiss Film Prize Quartz 2011.

French-speaking cinema was also successful in the Best Documentary Film category with the prize going to Jean-Stéphane Bron for his Cleveland Versus Wall Street which had also been nominated in France’s Cesars documentary category earlier this year.

Meanwhile, Isabelle Caillat was named Best Actress for her leading role in All That Remains by Pierre-Adrian Irlé and Valentin Rotelli, while Scherwin Amini was the surprise winner of the evening, picking up the Quartz for Best Actor for his role in Michael Schaerer’s Stationspiraten. Carla Juri was honoured in the category of Best Supporting Role for her performance in Cihan Inan‘s 180°.

Michael Steiner’s box-office hit Sennentuntschi – which has been seen by more than 150,000 cinemagoers since its release in German-speaking Switzerland by Walt Disney last October – did not take home prizes in any of its three nominated categories, but was instead awarded a Special Jury Prize for Gerald Damovsky’s production design which jury declared had “contributed considerably to the gruesomely dismal atmosphere that renders Sennentuntschi such a stunning, abysmal and absolutely atypical Swiss thriller set in the Alps.”

In addition, this year’s Honorary Award was presented to veteran producer Marcel Hoehn of Zurich-based T&C Film during the gala event on Saturday evening. Hoehn’s productions include the most successful Swiss film of the past 40 years, Die Schweizermacher, as well as films by the late Daniel Schmid (Beresina) and Christoph Schaub (Jeune Homme).

A full list of the prize-winners can be found at www.swissfilmprize.ch.