How can I effectively clean marble floors to maintain their beauty and longevity?

To effectively clean marble floors and maintain their beauty and longevity, use a pH-neutral cleaner and a soft mop or cloth to avoid scratching the surface. Avoid harsh chemicals and acidic substances that can damage the marble. Regularly sweep or vacuum to remove dirt and debris, and promptly clean up spills to prevent staining. Consider sealing the marble periodically to protect it from stains and moisture.