It's not that big a city, but plenty to do for that length of time. Others have listed most of the options, and you'll know what you like! One I didn't see listed was the >>> Museum Our Lord in the Attic, a 17th-century townhouse with a hidden chapel.
I see people have recommended the Indonesian cuisine restaurants . . .well, they may be OK for you, but we found that almost everything is done in or with coconut, which doesn't suit everyone?!
Whatever you do, have a great time, the Dutch generally quite like us Brits, as they still recall WW2, even if some nations have conveniently forgotten?!