A 3d rendering of a modern, minimalist interior space with a concrete staircase in the center. the staircase is made of concrete and has a sleek, modern design with multiple steps leading up to the second floor. it is situated in the middle of the room, with a large window on the right side, allowing natural light to filter in and create a bright, sunny atmosphere. the walls are plain white, and the floor is tiled in a light grey color. on the left side of the staircase, there is a white vase with a green plant in it, adding a touch of greenery to the otherwise monochromatic space. the room is bright and airy, with natural light streaming in from the large window, creating a sense of serenity and tranquility.