Sternchanze hipster area, cool place, alster lake, fishmarkt, st pauli stadium tour, river elbe river ride free with metro ticket, gross freiheit and star club always have good bands on and the reeperbahn is an eye opener
Stayed there a few years ago with a previous employer when we did CEBIT. Had a cracking time, albeit a very drunken one. Witnessed some very liberating scenes in a few bars for sure. Can’t say we sought out much of the culture though.