Let KAYAK do the searching
Based on KAYAK hotel searches, the most popular destination is Český Krumlov (95% of total searches to South Bohemia). The next most popular destination is České Budějovice (5%).
KAYAK users have found double rooms in South Bohemia for as cheap as S$ 52 (Český Krumlov) in the last 3 days. The average price is S$ 150.