I think Croatia is the best option for now, it just became member of the EU, but it still depends what part you would like to visit.
I'm here and the weather is great , my appartment isn't expensive at all, but it is getting more expensive (7kuna=1euro) , but it's great, while your here go visit some islands, i've went to Korcula yesterday with the Jadrolinija ferry, the trip to the island was good , but there was no ferry back, it was "too windy" even though i asked other sailers and there wasn't any wind, so we had to make a whole detour taking 2 boats , 2 buses because we had to go trough Neum(Part of Bosnia) and no one had a passport with him, so we had to make a detour once more, but it was beautiful, they say Marko Polo lived there, you can rent a scooter , bicycle or car, it isn't that expensive. And if you're more of the night-out type , go to Makarska, enough people to party with and all the rest with it , rich people with their cars that they can't control, really makes me laugh.