Let KAYAK do the searching
Based on KAYAK hotel searches, the most popular destination is Brighton (85% of total searches to East Sussex). The next most popular destinations are Eastbourne (13%) and Lewes (1%). Searches for hotels in Seaford (1%) are also popular.
KAYAK users have found double rooms in East Sussex for as cheap as €33 (Brighton) in the last 3 days. The average price is €209.