Pour in the coconut water, cream of coconut and salt, and stir well. Once it comes to a strong simmer, add the rice, stir, and cover and reduce the heat to the lowest setting. Cook for 16 to 18 minutes, until most of the liquid has been absorbed, but there is still some moisture in the pan. The rice should be cooked and tender; if it is not, but all the liquid has been absorbed, add 2 tablespoons of water, cover again, and cook for a couple more minutes.