Sofia.

Novi Sad is a beautiful city located north of Belgrade in the province of Vojvodina. I'd recommend going during the summer (especially during the EXIT festival, look it up). There are some really beautiful sights there & great food. If you ever go, make sure you go to "Toster" and get your self a Toster Monster. Or, if you'd like to try some traditional Serbian food I'd recommend visiting Sarajevski Cevap on Temerinska street. That's all in Novi Sad. I wish I could give you more info about Belgrade but I was there only once (for half of a day).
Definitely visit Djavolja Varos while in Serbia, it's a truly phenomenal sight.

Kosovo - no, just don't. It's not worth it.

>>1091394
Why not Kosovo? Not OP but was planning to go there during a Balkan trip this summer

>>1091394
>traditional Serbian food
>sarajevski cevapi

try to visit some monastery if you can, beautiful

>>1091412
it's still just a pljeskavica, pretty much the same like in all of the balkans (except that one place in bosnia oh fuck i miss that)
>>1091407
there are always conflicts going on there between local serbs n sandn... you'd most likely be fine but ehhh. also not much to see there, desu.
>>1091482
yes, this. there are a lot of them on Fruska Gora which is close to Novi Sad, would recommend.

>>1091080
chetnik