transform the existing white model of a rectangular interior space measuring 16 00 meters in length 9 00 meters in width and 4 00 meters in height into an indoor pool hall of a european grand hotel completely remove the double door on the back wall and the double door on the left wall and reconstruct those surfaces as continuous finished walls identical in thickness alignment and articulation to the adjacent walls leaving no visible trace of former openings retain the three windows on the right wall as the only openings in the space and define their frames in glossy black lacquer with a refined crisp profile insert a large indoor swimming pool positioned off centre toward the right side of the room oriented lengthwise along the full 16 00 meter dimension the pool must be generously proportioned but must leave a continuous clearly legible strip of floor along the entire left side of the room wide enough for comfortable circulation and the placement of luxury daybeds this left side zone should read as an elegant lounge promenade running parallel to the pool the interior of the pool basin must be fully clad in dark cherry brown mosaic tiles with a deep warm reddish brown tone the color must remain strictly within the brown spectrum rich and earthy with no violet purple or magenta undertones the finish should have a subtle gloss to enhance depth beneath calm pristine lightly reflective water design the architecture in a refined european grand hotel neoclassical style inspired by the uploaded reference image but without any gold accents on the walls the walls should be articulated with elegant classical panel mouldings in warm ivory and soft cream tones with balanced proportions and subtle shadow lines that create depth without metallic ornamentation the expression should be timeless dignified and restrained the ceiling must incorporate three transversal coffers spanning the entire 9 00 meter width of the room from wall to wall they must be evenly distributed along the 16 00 meter length each coffer single tiered and recessed exactly 35 00 centimeters deep the coffers should have crisp classical framing and clean geometry with no integrated or visible lighting of any kind their full width span must reinforce the transverse rhythm of the space and enhance the grandeur of the hall the floor surrounding the pool and extending through the left side promenade must replicate as closely as possible the flooring from the uploaded reference image it should consist of polished marble with a bold high contrast geometric inlay pattern composed of cream stone and deep dark marble forming a symmetrical angular motif with strong graphic presence and a high gloss finish that produces refined reflections place luxurious daybeds along the left side strip aligned parallel to the pool with elegant tailored silhouettes and refined detailing they should be upholstered in light neutral tones such as ivory or soft beige with a sophisticated grand hotel character that feels understated yet opulent illuminate the entire space exclusively with soft diffused natural daylight entering from the three right side windows there must be no artificial lighting fixtures no chandeliers no wall sconces no ceiling lights and no concealed light sources the final render should be highly realistic with precise geometry refined materials controlled color balance and a serene yet grand european luxury atmosphere