Let KAYAK do the searching
Based on KAYAK hotel searches, the most popular destination is Porto Alegre (77% of total searches to Rio Grande do Sul). The next most popular destinations are Gramado (14%) and Passo Fundo (5%). Searches for hotels in Caxias do Sul (5%) are also popular.
KAYAK users have found double rooms in Rio Grande do Sul for as cheap as £12 (Pelotas) in the last 3 days. The average price is £54.