in san diego,there are 4* or 5* hotels only in zone1, 3, 14,so u can add diffrent zones to bid.my target is omni.i bid 4*at $55,then add one zone and $2 every time.at $67,they told me the bid was accepted. in addition,in the bidding,i was worried that they would give me the sheraton marina,which is 4* but a little far from downtown.i was sure i could get sheraton at $69 by HOTWIRE or at $71 by pl hotel booking system.fortunately,i got omni.