ultra realistic architectural render refinement of the provided image strictly preserve the original image exactly as is same camera angle and composition same geometry and proportions same lighting shadows and environment no changes to windows railings doors or surroundings only apply the following material and colour changes change the main facade finish to a smooth painted masonry rendered plaster in a modern neutral grey tone mid light warm grey keep the finish clean even and matte with very subtle fine texture replace all travertine elements horizontal bands and vertical strip with light grey concrete finish concrete should appear smooth refined and architectural not rough or industrial subtle tonal variation allowed but no heavy texture or stains important constraints do not change material placement do not alter brightness or lighting conditions do not introduce new textures or weathering do not redesign or reinterpret any elements rendering style clean modern high end architectural visualization with a refined and minimal aesthetic
