#06997 Vilhelm Hammershoi (1864-1916)

The picture has something of this: people, nude, portrait, girl, monochrome, woman, wear, man, model, shirtless, black and white, naked, side view, shadow, window, wall, light.
Perhaps it’s a painting of a naked woman standing on a step with a towel on it’s back and a mirror in front of her and a door behind her.