Let KAYAK do the searching
KAYAK users have found double rooms in Northern Portugal for as cheap as $17 (Guimarães) in the last 3 days. The average price is $170.
In the last 72 hours, users have found Northern Portugal hotels for tonight for as low as $25 (Valença). Users have also found 3-star hotels from $27 (Valença) and 4-star+ hotels from $54 (Ponte de Lima).