Papa, Mama, Katrin und ich
Papa, Maman, la Bonne et moi (original)
Starring Robert Lamoureux, Fernand Ledoux, Gaby Morlay, Nicole Courcel, Louis de Funès, Gaston Modot, Madeleine Barbulée, Yolande Laffon, Robert Rollis, Sophie Sel
It's a comedy and romance movie, and has a rating of 6.7 out of 10 from Imdb which is usually fine for this kind of movie.
Watch it here
Not found streaming from Switzerland.