Sozopol in Bulgaria - only went because a work colleague said her friend really liked Bulgaria. So I went to a different little town than the main resorts. To be fair, it was 1994 - but it was an unpleasant place for a holiday as many locals weren't keen on westerners visiting, which they made plain, some just shouted at me, one mimed strangling me.
Still, it was quite interesting and Sozopol has cobbled streets and stone houses and I had an apartment in one of those overlooking the Black Sea.
And when it started raining after 3 days I could see how the Sea got it's name, it seemed to turn Black.