Hi and welcome to The Finance Forums.
As for your situation - it's really wise to make such an investment decision based on an informed understanding of the local market and relative strengths/weaknesses compared to other markets.
For example, lots of people are still looking at Bulgaria as an investment opportunitity - perhaps because a lot of people have previously invested there and made good returns.
But the trouble is, popular hotspots like Bulgaria are almost certainly at the end of their property cycle and people are finding themselves buying into negative equity because they followed the crowds in after the crowds have already milked the place for profits.
As for raising £30,000 - if you're basically looking at property investing, then you're probably going to be able to use a mortgage for this. Whether this is a UK mortgage or one taken out from an overseas bank I think really depends on the country involved and circumstances.
A warning point though - you say you have no debt, which means you could have problems getting the best deal if you move forward with this, because with less of a credit record you have less of a record lenders can use to guage your ability to pay back any sum borrowed.
However, your employment record should hopefully put you in good stead in this regard.
Anyway, hope that's helped a bit, and best of luck.