I fear that we’re going to see more areas that become unfit to live in – even if they had no problems before as you say.
I’m not trying to make comparisons (and I’m sure there are a lot more areas in Spain with dire prospects) just pointing out that I wouldn’t consider buying a property as per the area in the following link, no matter how cheap the place was. You’d probably need to pay for round the clock bodyguards. Once an area goes downhill, very hard to recover.
Having said all that, if someone could convince me the area was safe, it would be very tempting to buy such a property at just 6k.