Persistence pays off--I got an in-block room with 2 beds on Monument Circle! It /can/ happen! :D
Ive seen downtown housing open up just about every other day over the last 3 weeks. Sometimes multiple days in a row, multiple hotels. Definitely happens, but use the program site rather than randomly checking
Staybridge Suites 3 blocks away Double room available right now Thursday-Sat
Holiday Inn 3 blocks away available now.