Yeah, I watched already first few episodes. Really, really awesome show to watch! Extreme loads of violence, dark medieval feel and fantasy, sex, swearing and all round general good stuff. Saw some shots where indeed it could be filmed in Southern Europe, like one with that princess who was forced to marry that barbarian leader so that her brother could reclaim his throne.
Didn't know it was in Dubrovnik though. Anyway, good to know that Slavic world will play its role in this series as well!