Maîtresse
A young provincial in search of adventure stumbles into the subterranean world of sadomasochism when he is implicated in a burglary of a Paris apartment. The apartment’s mistress runs a two-floor operation, all respectability above and a dungeon of punishment-seeking clients below. After the young man becomes her upstairs lover, she finds that the two levels of her carefully controlled existence begin to interfere with each other. Barbet Schroeder’s MAÎTRESSE examines the line between fantasy and reality, decadence and deprivation, and the distance one will go for love.
Starring Gérard Depardieu, Bulle Ogier, André Rouyer, Nathalie Keryan, Roland Bertin, Tony Taffin, Holger Löwenadler, Anny Bartanovski, Serge Berry, Richard Caron
It's a drama and romance movie, and has a rating of 6.6 out of 10 from Imdb which is usually fine for this kind of movie.
Watch it here
Not found streaming from Denmark.