Let KAYAK do the searching
Based on KAYAK hotel searches, the most popular destination is Siófok (66% of total searches to Lake Balaton). The next most popular destinations are Balatonfüred (20%) and Keszthely (8%). Searches for hotels in Szántód (6%) are also popular.
KAYAK users have found double rooms in Lake Balaton for as cheap as $35 (Siófok) in the last 3 days. The average price is $139.