There's no way to get to Westvlettern except by car and there's NOTHING and I mean NOTHING else out there.
Brugges and Ghent are not only incredibly beautiful but they have loads of great places to drink; and you can even find a Westvlettern to try there if you look carefully.
Even Brussels has a huge number of great places to drink, but Brugges and Ghent have the complete package of being beautiful, authentic, and having loads of great beer.
I can't speak to Antwerp, though.
We're trying to close a contract at work for a project in Brussels for me in February so I'm super excited at the prospect of getting back to Belgium. (Be prepared to gain a lot of weight there.)
Adam