Let KAYAK do the searching
Based on KAYAK hotel searches, the most popular destination is Borkum (33% of total searches to Ostfriesland). The next most popular destinations are Norderney (33%) and Norden (33%).
KAYAK users have found double rooms in Ostfriesland for as cheap as €160 (Norderney) in the last 3 days. The average price is €241.