I'll second that. The other cities around it are worth a look too, but Brugge is one of my favourites. The nice parts of Brussels are worht a look, although the cafe´scene is unlikely to be in full swing at that time of year.
Amsterdam feels different every time you go there. It is certainly an interesting place though and quite easy to walk around. The Rijksmuseum (forgive my spelling) is well worth a visit. Among other treasures, you can see Van Gogh's self portrait there. There is plenty more to see in that city. I think I would have to die to get bored there.
I am biased, but Köln (Cologne) has a lot going for it. It has a good transport system, is easy to reach and has more art museums than any other city in Germany. You can speak English almost everywhere here and it is also easy to walk around. You might even run into Mudcatter alanabit there... In the Altstadt, ten minutes walk from the station, you can eat just about every type of food in the world in just about every national style of cooking.
Let other Mudcatters extol the virtues of München and Hamburg. If you think small is beautiful, try Freiburg, on the Swiss border. It is a gorgeous little city and you can see the Black Forest Hills rising behind the lovely cobbled market place.
Just about everywhere outside of the Swiss cities looks like a picture post card. The South part, with its lakes, is gorgeous.
Frankfurt needs demolishing.
Prague has a lovely centre, which is easy to walk around. Not far away is Dresden, which has stunning Gothic architecture in the centre, on either bank of the Elbe. They call it the "Florence of the Elbe". Apparently, it has improved a lot even since I was last there, now that most of the rebuilding has been finished.
Como, is a lovely small city on the edge of a lake in Northern Italy, about a mile up from Milano.
The Christmas markets in Wien (Vienna) are impressive for their hand made goods. The smell of the various drinks (punch and mulled wine) sold at Christmas markets in Germany and Austria is always very atmospheric. If you prefer smaller cities, which are also full of culture and history, Linz and Graz in Austria are always worth going to.
Now I am going to go and write another tourist brochure...