Vrčin -

This is an easy spot to find. Leaving Belgrade, you pass by IKEA on the right, take the first exit a few 100 mètres further and then go back toward IKEA on the service road. You'll come to a OMV service station. There's plenty of free overnight parking spaces and a 24 hour shop for an early breakfast. Obviously there's the traffic noise but at least I was the only one there last night.