Never get a mortgage in a different currency than your income

Poor Hungarian souls who financed their house with Swiss Franc mortgages before the financial crisis (80-90% of all new mortgages in 2006 and 2007; interest rates were as low as 3% compared to 12% in HUF). Not only has your debt increased by 50% in local currency, but your house is probably worth less, too. Double whammy.

Source: FXStreet.com