How long is your connection? Do you have to collect and recheck bags? What is the checkin / bag drop deadline for your onward flight? What time do you need to be at the gate? Check with your airline and adjust times accordingly.
Red light district? WHY? there are load of places in Amsterdam that are far better than looking at bored women in windows.
As to a restuarent you visited 20 years ago. Yes it could stll be there but likely as not it's something ele. Google it.