It's a beautiful city with amazing potential, but is quite stained by the vicious business. It has amazing architecture and lovely sights all around the city. Vice tourism is a contrast of the beauty of the city. Red light district is populated, dirty and noisy; whilst neighborhoods around and tidy, clean and full of bycicles.
Insider Tip:If you are traveling not thinking about Red Light District, go to Jordaan or the East and South. Lots of things to see there and around.