Locations for filming

I plan to film my teaser trailer primarily in a dark, cramped room with a bleak atmosphere which not only the characters are trapped in, but the audience can also sympathise with them due to the size and glumness of the room in which the two girls are tortured in. The location in the teaser will appear as an abandoned room which resembles the appearance of a squat; unkept and unpleasant. The strong dose of reality in it is what will make the teaser work, as it is a familiar setting many fear to end up in.