I've got a King Bed Studio Suite, Nonsmoking at the Holiday Inn Express & Suites on South Missouri Street, about 2 blocks away from the convention center, by the stadium.
It should fit 2-4 adults. It's $425/night (plus tax). It's a pretty nice hotel; we stayed there a few years ago.
It's reserved from August 3-August 8.
We can't make it to the con this year so I'm hoping someone else can make good use of it.
Email me at keyes_bill at hotmail dot com.