add a custom built in corner bunk bed matching high end architectural millwork style twin over twin bunk integrated into the corner with floor to ceiling square columns and horizontal beams soft matte white painted wood clean shaker style detailing upper bunk with simple vertical slat guard rail and flat wood cap add a pull out trundle bed beneath each lower bunk fully integrated and flush when closed minimal neutral bedding white and light gray accurate human scale realistic proportions photorealistic architectural interior rendering keep existing room layout window ceiling lighting walls and flooring unchanged built in millwork contractor grade construction permanently installed