M husband and I have a queen size bed available. It is at Red Roof Inn Inndiapolis South. We are staying August 1-6. For the 5 night stay it is $590.
So for 3 people it is $196 per person. 4 people it is $147 per person. 
The hotel is 8 miles from the convention center, but I bought a parking pass to a parking lot with a shuttle service. If you are interested, you can email me. [email protected]