going to a wedding in munich next summer and trying to decide where to go after. it's down to eastern europe (like maybe vienna/bratislava/budapest) and iberia. i don't know how to choose
do you want to visit just cities? Is food important? History? Nature/beaches? Architecture/museums/culture? A more unique experience?
like, going through that list (without visiting either, just helping you think it through):
food: Iberia seems like it would be better overall but Eastern Europe might be more interesting and unique. Like you can get paella everywhere in the US but not as many places to get something like beet soup
Nature/beaches: Slovenia has incredible hiking for instance but Iberia would have some great beaches. Also mountains in austria and stuff
Architecture/culture: IMO they're all pretty similar with a lot of old crap but Iberia would probably be more crowded and touristy
Unique experience: based on the millenials I hang out with who think they are interesting because they travel, everyone and their dog goes to iberia. Way fewer Americans go to places like Budapest but I've heard nothing but lovely things about Budapest from those who've gone there and I don't know of anyone who's been to Bratslavia.