Tried to book last room available during an big event night in Belgrade and got the message "we're sorry, this room is no longer available." Kept trying other hotels and finally found one in a nearby town. SIX HOURS LATER, at 8:14pm I got a mysterious confirmation from the hotel.
Suddenly the reservation, which was denied, didn't receive a confirmation email for, and did not show up on my account appeared there as well. Weird mistake? Nope, charged my card as well and when contacted said the reservation could not be cancelled.
Never been to the property because they rejected the reservation - but then confirmed it 6hours later. VERY suspicious business, turned it over to the fraud department of my credit card company. You MIGHT get a confirmation and have a great stay...or you might get a rejection notice and then have them charge you later anyway.
My business goes elsewhere, this is a fyi for my fellow travelers.