cabinets, stairs with flip up steps and very narrow stairs. Each step goes up one at a time for each foot. It is sort of spaced so you are putting one foot per step with a steeper step. Very space-saving.
Limed timber stair treads on the staircase, and matching limed original timber floorboards weave together consistently through the spaces as if they had always been there. A book filled bookshelf is nestled between the studs of a wall supporting the staircase.