We have just spent 3 days here and loved it. We arrived on a thursday, by saturday it was very busy!! It really is a beautiful city. Lovely buildings, canal trip was great, yummy chocolate, great beer!! A city card is good if you plan to visit lots of places, good value for money. You can walk everywhere too. Well kept city and very clean. The only slight thing was some shops gave you excellent service and some did not! we were wrongly over charged 3 times while here so be aware! Also avoid the markt square restaurants, very expensive, the one we ate in had avarage food and staff were not friendly. That said The restaurants in the streets off the markt are lovely, as was the fries stall! We would recommend anyone to come here though, you will not be dissapointed, we hope to return.