When booking a hotel in Serbia, you will find that all the main websites have very little choice: lastminute.com doesn’t even have Serbia (or Yugoslavia) in its list of countries! A better option is to use a Serbian site like VisitSerbia.org. Make sure you print out the email receipt to show the hotel when you check in so that they know you booked through them and you get the special discount rate. And keep it until checkout to remind them again. It cut my hotel bill by more than 50% in Belgrade!