Sacred River Spa at Four Seasons Resort Bali at Sayan. Immersed in lush jungle greenery in the Ayung River Valley, the Sacred River Spa is a serene and nurturing environment with a deep focus. Spiritual practices and rituals balance and restore the subtle inner energies, uniting body, mind, and spirit. Offering a glimpse of what is possible when consciously aligning ourselves with the Earth, they evoke a sense of awareness, wellness, and being.