Go to biddingfortravel.com to see what hotels are available in the area you want to stay in. The list won't be complete, but they're pretty accurate. You can also get an idea of what's available by faking a booking on priceline.com - I believe the hotels you can blindly book are the same as these.
You can get "free rebids" - by selecting the star level you want, then re-bidding in adjacent zones which do not have those level hotels. Just be sure you would accept a hotel in one of those zones, in case something unexpected pops up! You can also get free rebids by starting with resort or higher, then add 4* and higher, then 3* and higher, if those levels are available in the area you want. Just start with the highest level in the zone, if you put in a 3*, it looks for 3* or higher.
I did this for Thanksgiving week - we wanted a hotel in Jacksonville, FL, near the airport, checking in on Sunday before T-giving, out on the Saturday after. There were 3-3 star hotels, Holiday Inn (I really wanted it, it's older, but has a nice indoor/outdoor pool and bar area), Hyatt Place (new hotel, great concept) and the Loft Hotel (trendy, modern)... All of them were around $90/night. I started in the airport zone with a $25 bid, rejected, added another adjacent area $30 - rejected, then added another adjacent area and $35 - accepted, at the Hyatt Place! We got 2 rooms for $550 for the week - the hotel is brand new, and the reviews are great- the complaint I've seen is that the 47 in. HDTV is too close to the bed! Okay! Free wi-fi, Free cont. breakfast. We saved over 50% from what we usually pay for a condo further away!
I would start bidding now, as you have to wait 24-48 hours before rebidding the same area/star levels.