Croatian Sensation

tbh, you can't go wrong either way during the summer. the north is more peaceful, the whole region (Istra) is green and islands like Rab and Lošinj are oases, but there are more things to do in the south and you have larger cities on the coast, like Split and Dubrovnik. depends on your preference, but should be a great getaway. food is excellent, any grilled meat or seafood are superb
thanks and likewise, take care