take a visit to Congress Avenue, just across Town Lake and the hike and bike trail (you could pay your respects to the Stevie Ray Vaughn statue) & up the hill.
Austin has a very outdoor/active healthy lifestyle culture.
Congress Avenue can offer someinteresting shopping and some good restaurants - Amy's ice cream, Vespaio (fancy & excellent italian), Homeslice Pizza, El Sol y La Luna...Jo's coffee
Before you head back to Ohio (where i grew up) be sure to try some real Tex-Mex.
there are some hotels here too, but probably best to be near campus. You can take the trolley, called the Dillo for free to visit around town.
mg