Let KAYAK do the searching
Based on KAYAK hotel searches, the most popular destination is Schönefeld (33% of total searches to Brandenburg). The next most popular destinations are Rheinsberg (33%) and Feldheim (22%). Searches for hotels in Potsdam (11%) are also popular.
KAYAK users have found double rooms in Brandenburg for as cheap as $87 (Schönefeld) in the last 3 days. The average price is $214.