Ah yes, I had stumbled across that one too. I am tending to lean towards flats I find on german sites for germans. I think the asking prices will be much closer to what the seller would really accept as a lowest offer.
Having read a few of the Bulgarian threads and the dowright lies people are being told by agents/developers etc. I feel more confident in dealing with the germans. For example-that site I found above. The guy's name is Alexander Korte and when I told him the postcode I was interested in he came back and said "sorry, we don't have anything there but it is a very nice area and I would buy there myself". So no hard sell. No BS about it being a bad investment. Just a straightforward answer.
I have arranged to view a couple of properties I found on immoscout as well as two with Adhoc. I have particular reasons for the area (motorway access being important) and so I can't just buy anywhere in the city within budget.
I would be like you here-not looking for a 'quick buck'. I'm looking for a second home! If it appreciates, great, if not, well it's still cheaper than renting. I have limited myself to 40k + taxes & charges as the max I can pay (savings) as I don't want to top up my mortgage on my house here. It's still amazing that you can buy a flat in the capital of the largest economy in Europe for that sort of money if you ask me.