hard constraints do not change preserve the exact geometry layout proportions and camera position from the reference image do not move walls do not redesign the space and do not add new furniture or architectural elements the cylindrical sauna remains exactly in the center of the space maintain the sink and the mirrors that are visible behind the sauna cylinder and before the back window do not remove or relocate them there is no bench behind the sauna maintain the original wall panels marble placement and corridor layout exactly as in the reference image scene description luxury spa interior corridor with a central cylindrical sauna made of ribbed fluted glass the sauna has a circular glass skylight in the ceiling above it allowing natural light to enter from above behind the sauna cylinder and before the back opening there is a sink area with mirrors that must remain in the same position and design as the original image the surrounding walls are large green marble panels forming a corridor the floor is light matte travertine stone and the ceiling is smooth beige plaster in the far background beyond the interior a distant los angeles skyline landscape is visible behind everything else material realism improvements marble walls should be deeper green matching the tone of the original image with natural stone veining and high resolution texture marble should have soft low reflections and natural imperfections not glossy the ribbed glass sauna should have realistic refraction and light distortion through the vertical fluting travertine floor should be matte with visible pores and natural stone micro texture add soft architectural lighting and global illumination with light entering through the skylight above the sauna photorealistic materials ray traced reflections natural shadows high end architectural visualization quality rendering keywords ultra realistic archviz render cinematic lighting physically based materials global illumination ray tracing photorealistic interior render 8k