Let KAYAK do the searching
Based on KAYAK hotel searches, the most popular destination is Cologne (65% of total searches to North Rhine-Westphalia). The next most popular destinations are Düsseldorf (31%) and Dortmund (3%). Searches for hotels in Wuppertal (2%) are also popular.
KAYAK users have found double rooms in North Rhine-Westphalia for as cheap as $46 (Cologne) in the last 3 days. The average price is $224.