I say keep trying PRICELINE. As we get closer to the marathon hotels might start opening up empty rooms. If you don't feel like chancing it, I recommend the Larkspur Union Square. We've stayed a few times and although the rooms are a little small the hotel really is amazing. I would choose this over a regular 4* any day. I just looked and they have rooms available under 140.00. Hope it helps, and good luck!!