Paint a runner. Add a painted runner to a staircase in hard-wearing floor paints in sympathetic shades. A multi-stripe design will make narrow stairs in a country cottage seem wider. Experiment with widths and use masking tape to section off the areas you want to paint.
Monochrome chic. Simple is best 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.