The Huerth center is approximately 3 miles south of Rhein Energie Stadium and 3 miles southwest of University of Cologne.
Below are reviews of the city of Huerth, Germany from an actual visitor's perspective.
Huerth is only a few stations from Bruehl where the Phantasialand is and a couple of stops from Cologne. It's the perfect alternative if you don't find a good hotel in either places.