Long story short, I booked a hotel during a very busy convention next month, which required multiple reservations to cover the entirety of my trip as I caught rooms available a couple days here or there. I *FINALLY* got all the days I was visiting and called to pre-pay on them for lower rates. By the time it was said and done, the agent had adjusted one of my reservations and removed one of the days I was booked for, and somebody else snagged it before I realized he had done it.

Is there a site out there where I can go "I want to stay at this hotel on this night" and have it constantly query availability and ping me when the room comes up so that I don't have to randomly go to the site or mash F5 all day for the next month?