Hi,
To find Slovenia, you will find it has an Austrian border, too. It's proximity to Austria got it quickly out of the war with Serbia. The Austrians said any '"accidental" flyover to their space was a declaration of war. I have been to Ljubljana a number of times, often arriving from Zagreb.
Once, I was departing Moscow the next day for Ljubljana. I was having dinner with friends who liked to make clever jokes. I kept saying Ljubljana, they'd looked at me odd inquiring, "Why are you going to Lubyanka?" Lubyanka was the KGB prison. Given that the joke was coming from someone known to be KGB, it seemed especially funny (or scary).
In the region you are in, there are two favorite foods: lamb cooked on spit often sold by the kilo in restaurants. The other favorite are the seafood restaurants with fish and scampi fresh from Adriatic. My favorite meal: Scampi Buzara, which are crawfish cooked in a tomato-garlic-cognac sauce that is to die for. If I was by myself, I would get an order of Scampi Buzara and a green salad. If I was with others, I would get the scampi buzara as an appetizer, then select a fish to be grilled over live coals finished with a brushing of oil and garlic and a green salad.

I use every spoon and scrap of bread to get every bit of the sauce. It is so wonderful.
The last time I was Zagreb with my Dad, we had a huge argument over where to eat. He favors lamb, I wanted by Scampi Buzara. I lost. I am still a bit mad about that.
In this part of the world, a typical dessert is crepes filled with rosehip jam. Plus the usual Balkan foods of Cevapcici, roasted peppers in lots of stuff, baklava, ect.
Regards,