PRICELINE only guarantees double occupancy, after that it's at the discretion of the hotel, and you could receive a room with only one bed. While you can call the hotel you win and request a room with two beds, the hotel may not be able, or willing, to honor your request.
If this is not a risk you're willing to accept, HOTWIRE would still be an option as they allow you to search for up to quad occupancy and ensure sleeping accommodations for everyone you include in your search (although this usually means two beds, the second 'bed' could be a sofabed, rollaway, etc)... or you could look for an option showing "Bed Choice" on PRICELINE EXPRESS and see if one of the options offers a room with 2 beds.
Please use the PRICELINE and HOTWIRE links on the board to begin your travel purchases... or thru our sister site MAPS and HOTELS.com for your regular rate purchases.
Let us know how we can help you further with your stay.