I was in Aruba in 2007 about 8 months before I relapsed, staying in a friend's timeshare condo on the beach at the beginning of the strip with all the hotels. I felt very good  most of the time, but once in a while, I'd be extremely tired, which I attributed to the heat. We moved from one condo to another every week, and I think in retrospect that some of the units might have been better than others. We drove all over the island and I felt about the same everywhere. The island is naturally a desert, and there is a constant breeze, but the developers are adding more pollutants with golf courses, pesticides, and lush gardens, so it is sure to lose that pristine quality of air.