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Did you look up my entry? Then you should know that dubrovnik definetly must go on your list! It is WAY better than split, rovinj, zadar, zrce! Believe me, I have been to most of those places more than once ;)
Plitvice Lakes should also be considered though! Probably making a entry about those in the next days - Follow me for more information :)

I've visited all those places except Dubrovnik because I'm not a fan of summer crowds.

If you look in my post you will see a tip where you can go to escape the crowd ;)