Left Bank Linkeroever

Left Bank Dutch Linkeroever is a 2008 Belgian horror thriller directed by Pieter Van Hees, starring an ensemble cast of Flemish actors.

After learning the apartments previous tenant mysteriously disappeared, Marie becomes obsessed with the mystery, all the while suffering from headaches, nausea, tension and insomnia. As Bobby dismisses her theories and fears, Marie delves deeper into her investigation, growing suspicious of her loving boyfriend and the ritzy building, whose longhidden secrets have nightmarish consequences.

Source: Wikipedia