I did Pub-Crawls in other cities, where we visited cool/authentic/characteristic bars and the guide gave us some background information on the place. What I experienced in Warsaw was a night where the guides with non-stop drinking games animated the participants to drink and above all buy drinks. None of the bars was cool. The only common denominator was, that aside us, there were hardly any people. So probably not really the hot-spots of the city. So if your aim is to get drunk while playing stupid drinking games, then this is the tour to do. If you are interested in cool bars and meet people, then better start your own tour.