Last month I had 1 night at the Omni in Washington DC for $100 using priceline. After we checked in we decided to stay another night, I went down to the front desk and asked if we could stay another night at the same $100 PL rate. The desk clerk said NO, the best she could do was $305, I said thanks anyway. Went back upstairs, got on laptop and bid $100 again and got the same hotel. Downstairs I went again and asked to keep the same room tomorrow night, the clerk was amazed that we got it again for $100. She said we could keep the same room. Well worth it in Washington DC :)