First, you need to decide how you want to invest (i.e. short or long-term).

Personally, as a RE professional, I advise people to aim for 10-year investments

in stable and developed country. It’s true that yields on property are lower

(2.5–6%) but actually your property’s value grows faster and compensates these

lower yields.
The markets in Austria, the UK, Germany, the USA, France and Switzerland

present the lowest risks (e.g., hyperinflation, national currency devaluation and

GDP declines).

It’s also important consider what currency your personal expenses will be in

within five to ten years. For instance, if you own residential property in the UK

and your children are studying there too, it is worth investing in property that

earns rental yields in British pounds rather than, say, US dollars.

In terms of location, it is better to opt for either popular areas of major city

centres and their well-situated suburban areas, or the medium-sized towns with

growing numbers of inhabitants, well-developed labour markets and potential

for economic growth.