Let KAYAK do the searching
Based on KAYAK hotel searches, the most popular destination is Hamburg (89% of total searches to Wadden Sea). The next most popular destinations are Esbjerg (7%) and Bremerhaven (2%). Searches for hotels in Den Helder (2%) are also popular.
KAYAK users have found double rooms in Wadden Sea for as cheap as S$ 29 (Hamburg) in the last 3 days. The average price is S$ 288.