In Belgrade. It's a pretty nice town with many unattached women, given that a whole generation of men were killed in the war way back when....
The center city is very nice for site seeing along the river. I can recommend the hotel Moskva, which is decent and in a great location for tourist site seeing.
If you go I'd appreciate it if you brought me back a big bottle of the local snapps as mine was confisgated by the Germans in the Munich airport on my way back ......