Let KAYAK do the searching
Based on KAYAK hotel searches, the most popular destination is Singapore (42% of total searches to Southeast Asia). The next most popular destinations are Kuta (33%) and Bangkok (18%). Searches for hotels in Kuala Lumpur (7%) are also popular.
KAYAK users have found double rooms in Southeast Asia for as cheap as $9 (Ho Chi Minh City) in the last 3 days. The average price is $161.