Let KAYAK do the searching
KAYAK users have found double rooms in Sumatra for as cheap as $6 (Pematangsiantar) in the last 3 days. The average price is $25.
In the last 72 hours, users have found Sumatra hotels for tonight for as low as $6 (Pematangsiantar). Users have also found 3-star hotels from $8 (Bandar) and 4-star+ hotels from $28 (Sabang).