They only have to step out their own back door to find themselves in a paradise. Adjacent to an upper patio, gold, silver, orange and black koi flash their iridescent colors in a water lily-accented pond with a water-jet fountain. Alongside that same patio is the head of a small stream that twists down the hillside creating a series of tiny waterfalls as it cascades over strategically placed rocks; appears to course under an arched bridge, and eventually find its watery way into a stone-surrounded recreation pond suitable for swimming.