Aleksandar is an amazing guide with huge exeperience and able to run a tour at several different levels. We were a quite complex guests with two adults and three kids quite a different ages (13, 10 and 3) - and to all of us there were plenty of interesting details, so everyone learned many new things, quoting Aca in the following days. Perfect in english, serbian (and croatian & bosnian of course) so as in Slovak, and as we understood besides Dutch comfortable in even more languages. That was surely one of the best tours we have ever had. All recomendations to Aleksandar! Aca RULES!