you sure you are in Germany, Europe?
your description is rather different to my day-to-day experience orb. Granted, the place is tidy and people observe the law, but...
And Hamburg is really no different than any other port city. If you think that is beautiful, please don't go to Prague, you might die of sensory overload. Even Amsterdam is way nicer than Hamburg. The only thing worth mentioning of Hamburg is the modern bridge across the river, the Reeperbahn and how dirty it can get... People from Hamburg hasve a reputation among Germans of being very snotty and "over your shoulder"... check out the Altona area in Hamburg for a taste of this.
If you are in the area, take a bus to Lübeck... that one is really nice!