I recently just got back from taking a trip to Antwerp. I took the train there, which took about two hours and was not the most comfortable, but overall it was just fine. It was pretty cheap, only about 30 euros and Belgium was definately an experience.
The city is incredibly small, you can walk it within maybe an hour max. We stayed at a hostel called the Boomerang and for a first time hostel sleeper, I can say, it was not that bad. My very favorite part of the city was its museum of Flemmish Art. They had an awesome collection and the set up was easy to follow. This museum is not just a whole bunch of art smashed together in a gallery. You can easily follow the progression of Flemmish art and see its tranformation from very flat to very realistic.
If you go to Antwerp you may want to club in a church! They have an old gutted out church turned club with smoke machines and a huge industrial sized fan.
The Flemmish are not as nice as the Dutch. They don't speak as much english and they seem not to like tourists at all, which is funny cause I really saw nothing but tourists. They also enjoy cat-calling, so be aware of that. Other than that, the trip to Antwerp was well worth it.
