I stayed at the Aqua Marina in March and am going back to them tomorrow (woo hoo!). I originally booked them through a travel agency, but booked on my own for this trip. I had a fabulous experience there, but have also had a fair amount of difficulty getting through to them via e-mail. You may have better luck calling them--their numbers are 1-800-641-2994 or 011-501-226-4675. You can also check out their website at http://www.aquamarinasuites.com/index.html
if you haven't already. I feel your frustration about not getting e-mail responses from them, but I will say that when I was there in March they were a very professional group of people and I thoroughly enjoyed my stay. Good luck!!