Luxurious Hydrotherapy Chamber in Coastal Cave Spa

An interior hydrotherapy chamber inside the exact same fictional coastal cave wellness spa shown in the reference image, preserving the same warm limestone cave structure, pale travertine surfaces and organic architectural curves, one long sculptural mineral-water pool recessed into the floor, gentle natural steam rising from the water, soft sunlight entering through a narrow opening toward the sea, subtle amber lighting reflected across the stone, tranquil uncluttered composition, believable drainage and pool edges, ultra-photorealistic luxury spa photography, no people, no circular pool, no text, no logo, no signage, no watermark