render a luxurious indoor spa with an elegant modern aesthetic use soft warm lighting to create a tranquil atmosphere the walls and ceiling should be covered in cream and beige mosaic tiles providing a soothing backdrop incorporate gentle curves and flowing lines in the architecture for a harmonious feel include large sculptural white panels as focal points on the walls the water should appear clear and reflective capturing the warm light add a polished marble walkway with subtle green accents ensure the overall mood evokes relaxation and serenity architecture
