A purchase can be worthwhile because it has the potential to generate a good rental yield, because you believe its value will appreciate for a particular reason over a particular period, or perhaps because you want to be able to spend time in that place.
Cheapest is not best. Still, of course, cost matters.
Buying real estate in a country other than the one you reside in, is a perfect way to truly spread your wealth to ensure you have a real safety net.
When you own a property in a different country, you are truly moving your wealth away from any risk you have at home.
Having a property rented out is a great thing, especially since a rental price tends to far outweigh the money spend each month on a mortgage. This is one of the most powerful aspects of property ownership for investors like these.