I don't think there is anyway to target a particular hotel, unless you know that it is the only hotel available at your requested Star level in a particular zone. For example if you bid 5* Las vegas strip zone you are 99% sure that you will get the Venetian if your bid is accepted. If you use Hotwire, you can sometimes figure out the Hotel, by matching its icons against Hotels that show up in a vacation search for your same location.(since the Hotel names are revealed in Vacation searches before you purchase as opposed to after)