Your tips Pickpockets can be a problem. Always hold on to your purse, camera, & billfold in large crowds. I've never had a problem but the locals say it's quite a problem all over Europe. Travel the countryside by train and visit the entire country. If you rent a car, the whole country is only 2 hours across. Enjoy the art galleries, cathedrals and canal boats.
And Utrecht is just as great! I love the Netherlands, I've visited there 8 times. I have flown KLM before and it was excellent. They were partners with Northwest (do they even exist now?) Even if the shopping was poor and the nightlife was average, I would go back just for the cobblestone streets, architecture and the friendly people.