A minimalist Scandinavian-inspired spa bathroom at golden hour, freestanding oval stone bathtub overlooking floor-to-ceiling windows revealing misty autumn forest, warm gray terrazzo floors with dried pampas grass arrangement, rattan mirror and brass fixtures casting soft reflections, hand-painted watercolor textures with visible brushstrokes and paper grain, warm amber and soft sage color palette, Blender Cycles cinematic render with frame-by-frame oil painting aesthetics, volumetric golden hour light streaming through glass creating elegant shadows, global illumination creating ethereal tranquil atmosphere, architectural digest quality composition, peaceful contemplative mood at sunset in refined wellness sanctuary