It's a bubble which will burst. I have heard quoted the figure that 80% of the sales are speculative. Apart from that consider Sharia Law (unless you set up a trust), no permanent visa and dodgy build quality, oh and the political risk.
You might also look at the medical facilities (or lack of), the driving standards and traffic.
There is also a far bit of crime -we were burgled three times last year. We found out who was behind 2 of the burglaries (not the police) but the police have refused to take any action, as we did not find out quickly enough and the case was closed. They have to burgle us again then they can take action. I ask you - it's worse than the UK police.
As somebody said, the time to make the big money was 2 years ago. You might make some now but you would have to be careful. As ever rate of return is directly proportional to the risk rating of the investment.