I just joined the forum here, but I've been using Priceline for the last six months and if I'm having trouble getting a room at a lowball price, I'll usually check HOTWIRE to see what their prices are. I checked your date and there's a four star in Cambridge on that night for $160; above your price, but it's possible that room could be had for your price (or less) if that hotel is available on Priceline. Just a thought and good luck.