My wife and I had an excellent experience at the Townhouse 27 hotel. The staff at the hotel was super friendly and helpful! Helping us to arrange an airport transfer at the last minute, offering us an umbrella when it was about to rain, assistaning with directions... Just very friendly and professional overall. The room and hotel condition was also lovely. It's not a super big hotel so expect a cozy environment. The location is also central so only mins walk and you're in the middle of a nice shopping boulevard. By the way, if you haven't been to Belgrade, you should check it out, it's an hidden gem.