Thanks to book2park for recommending parking options from cheapest and closest to most expensive and farthest. We chose the Holiday Inn Express 2.7 miles from the airport. We paid less than $90 for eight days, and the staff could not have been more helpful and friendly. They made a special trip to take us to the airport, even though the shuttle usually runs on a schedule. They pulled up to our vehicle and loaded our bags. The driver gave us instructions on how to get to our terminal and what to do when we returned. Upon arrival back in Austin, we called them and were picked up less than ten minutes later. Every member of the staff was friendly and helpful. (Well, the driver on our return trip wasn't exactly friendly, but he wasn't unpleasant and he got the job done. We didn't mind since everyone else we dealt with went above and beyond. Plus we were exhausted from or trip and weren't feeling chatty anyway.)