10/10
It's like being a guest in a luxurious private house in a quiet quarter of Belgrade. The house is magnificent, the service attentive, the prices are reasonable and the breakfasts are good. The only thing I would change is to have tea and coffee facilities in the room (but the service was so good I could have asked for them any time I wanted them anyway). Since the trip I have been telling people how enjoyable the stay in Belgrade was, and it's largely due to the experience I had at Belvedere.