Otherwise the experience may prove memorably expensive. Take care when walking. You'll need it, since getting lost is quite easy - although enjoyable, if you don't panic. Getting lost is fun when you have time on your hands in Bruges - but a nightmare if you're in a rush. Be prepared to be ' inspired' by this city.
Many tours stop off here en-route.
The usual three hours is just enough time to sample its delights, but I believe you need something like three nights in the city to really soak up its atmosphere. Be prepared to wander round in a timeless zone, so aim to enjoy it with no time pressures.