Architecture, miniature minimal design of a small modern villa for 6 people, with a strong focus on a captivating cascading waterfall originating from a river that flows through the interior. The villa, partially underground and situated on a gentle slope descending towards the ocean, is characterized by organic, circular shapes that create a harmonious and flowing design. The villa should have two to three levels, with each section distinctly separate and independently distributed, connected by open walkways and terraces. The cascading waterfall should be the centerpiece, seamlessly integrating with the villa's organic design and enhancing its natural setting. Include rooftop gardens and hanging garden areas that blend with the native vegetation. No furniture models, photorealistic with a shallow depth of field, highlighting the clear details, organic curves, and circular forms of the structure. An infinity pool at the lowest level extends towards the ocean, enhanced by warm nighttime lighting, rendered with Octane.