Thailand. Now this may rub people the wrong way because a lot of people like thailand (and yes, there are loads of ‘normal tourists’ there) but almost every (s)expat I’ve come across living there has been a sexual degenerate and/or misfit in western society. Their lives revolve around women and drinking.
(dis)honorable mention: Colombia, Phillipines, Cambodia. Lots of creepy motherfuckers descending on otherwise beautiful countries (which they’ve no real interest in seeing the sights of).
Zurich: like going back to the 1500s. Clean, beautifully preserved old town, lake, and views of the alps in the background. (The pay packet is definitely pretty too if you’re working there :)
Medellin: I’m talking from an aesthetic pov (definitely not about the expats). Beautiful, vibrant buildings, graffiti, mountain views.
Singapore: Spotlessly clean, and beautiful old colonial style architecture and buildings.
Kanazawa: peaceful, serene, clean, Kenruoken garden is a thing of beauty.