LOVE the dark wood floor and gray walls! From another pinner, "Pretty gray -- sherwin williams "Pavillion Beige" I have painted my past three houses this color. I always get asked what the color is. It is a beige grey color.
Simple in a narrow hallway. White painted stairs make them appear wider and the grey runner is both practical and elegant. Seek out a slim console - vintage or modern - thats useful and decorative but not space-consuming.