Assuming no mosquitoes, personally I'd just sleep with the windows and sliders open and the ceiling fan running. That works for me in Hawaii. If it doesn't work for you, then the option is to move somewhere else. Being on a cert obviously complicates matters. I'd probably start by politely but firmly explaining to a manager that you can't sleep without AC, and that you would like them to move you to another Marriott/SPG property at no cost.