If you see "good beer" as synonym for craft beer, then there are not many places in hamburg, but there are a few: schankwirtschaft hamburg | craft beer bar This is an independent craft beer bar in the center of St.Pauli. read more
This place is very handy for a thirsty traveller changing trains in Hamburg, being directly opposite the main station. It consists of a single long, thin room stretching away from the street. The décor is in that horrible generic style of places which can't decide if they're a pub or a restaurant. read more
Sure, you can get a beer in any pub in Germany - but not any beer. Many pubs offer the local brew plus a pilsener. If you order "ein Bier, bitte," the server won't ask what kind, he or she will just bring you the local stuff. In Munich it's Hefeweizen or "Helles," in Cologne, Kölsch; and in Hamburg, Astra. read more