second floor residential interior design isometric view no roof staircase access from lower corner leading into a central living room layout includes 3 bedrooms 1 full bathroom 1 balcony and a family living space functional circulation clear zoning optimized space planning fully furnished living area with sofa tv unit coffee table bedrooms with beds closets nightstands bathroom with full fixtures balcony with outdoor furniture modern contemporary style light wood neutral colors warm lighting natural materials architectural isometric render premium real estate style realistic lighting and shadows