Serbia is a buzzy and boisterous country, compact enough for visitors to sample both Belgrade’s urban hedonism and the gentler pace of the smaller towns or national parks within a few days – and it’s one of Europe’s most affordable destinations to boot. Grittier than its blue-eyed neighbour Croatia, it is nevertheless an integral part of any backpacker’s Balkan tour: at the heart of the region, it gives easy access to the cluster of cultures and histories crammed into this small corner of Europe.