Let KAYAK do the searching
Based on KAYAK hotel searches, the most popular destination is Cologne (67% of total searches to North Rhine-Westphalia). The next most popular destinations are Düsseldorf (28%) and Dortmund (2%). Searches for hotels in Münster (2%) are also popular.
KAYAK users have found double rooms in North Rhine-Westphalia for as cheap as $27 (Dortmund) in the last 3 days. The average price is $372.