in January. I'm 30 and this will be the first time I've ever been travelling. Everything booked now except the individual hostels, which I've been looking at today. These are the cities I'll be visiting (2 nights each):

Amsterdam
Berlin
Prague
Vienna
Bratislava
Budapest
Zagreb
Ljubljana
Venice
Milan
Zurich

Tell me anything about any of these cities. (Preferably good bars and museums to visit, rather than anagrams of their names or something.)