This is nothing like what I imagined the night bus to Sarajevo to be (:

Expectation: you board in Belgrade in the evening, fall asleep, and wake up in Bosnia in the morning.

Reality: you sleep in short, fitful bursts and spend half the night jumping on and off the bus. There's a technical stop, and then border crossings (two of them), where everyone gets off the bus, gets their passports stamped, and is only allowed back on once everyone's done (I was grateful it was warm outside). And then the driver announces—only in Serbian—that anyone who wants to get to Sarajevo needs to switch to a different bus because this one is going to a completely different part of the country. Nothing about this in the ticket!

There are 6 buses a day from Belgrade to Sarajevo. Five of them go to the eastern part of the city and are run by Serbs, but tickets are only sold at the ticket counter. The sixth route is available online, goes further to the city center, and is operated by Croats. The thing is, East Sarajevo is part of the Republika Srpska (not to be confused with Serbia), while the center isn't.

PS. And if you bought your ticket online, you still have to buy an extra platform access ticket at the bus station.