Being Chinese, and having worked and lived there, for my ideal "retirement" - I'll choose to be in China... either Hangzhou, Chengdu, Suzhou, Tianjin, etc... ie one of the 2nd tier big cities.
My interests are more for cultural immersion, enjoying the food, visiting all the historical sites, doing some charity, setting small self-sustaining bizs, etc.
So maybe a few months China, a few months Spore, something like that - ideally spring/summer/early autumn in China, autumn/winter in the tropics.
Still working on it.