Let KAYAK do the searching
Based on KAYAK hotel searches, the most popular destination is Porto Alegre (33% of total searches to Rio Grande do Sul). The next most popular destinations are Gramado (33%) and Bento Gonçalves (33%).
KAYAK users have found double rooms in Rio Grande do Sul for as cheap as S$ 26 (Gramado) in the last 3 days. The average price is S$ 127.