A 3d rendering of a modern, luxurious interior space with a grand staircase and marble floor. the image also shows two round mirrors on the wall, adding a touch of elegance to the space. on the right side of the image, a wooden door with a golden handle is visible, leading to the upper level of the room. the door is made of light-colored wood with a smooth finish, and has a decorative iron railing with intricate scrollwork. the marble floor is smooth and polished, with a glossy finish that reflects the light. the room has a high ceiling with recessed lighting, and the walls are painted white, creating a bright and airy atmosphere.