I understand only a Run of the House room is guaranteed with a Priceline bid - no explanation needed there. However, I have heard of people getting everything from rooms just slightly bigger than their bed, facing brick walls, to, corner rooms, with grand views. My sense is that it probably all depends on availability. I am arriving late Thursday night (10 PM) this Thursday at the Chicago Hilton. Am I more likely to get a room I want (A king, rather than two doubles) by calling in the request tomorrow? Or do you think I'm more likely to get it if I wait until Thursday night check in? For example, perhaps at check-in, all the Run of the House rooms are assigned first, then, they move up in quality as needed, to fill the remainder of reservations as the day goes on. So what I am thinking, is if I did put an advance "special request" on the file, they might only minimally meet my needs - i.e. a king, but it will be on the 3rd floor, facing a brick wall. But if I DON'T put in a request ahead, perhaps the most basic rooms will be gone and they will be FORCED to place me in an upgraded suite? What do you think is the better strategy? I'd better phone in the request ASAP if people suggest I should call ahead! Thanks all!