Let KAYAK do the searching
Based on KAYAK hotel searches, the most popular destination is Cologne (54% of total searches to North Rhine-Westphalia). The next most popular destinations are Düsseldorf (32%) and Dortmund (7%). Searches for hotels in Bonn (7%) are also popular.
KAYAK users have found double rooms in North Rhine-Westphalia for as cheap as $30 (Cologne) in the last 3 days. The average price is $163.