On the second floor, no need to queue. Rented twice, and the cars were very new (under 10,000 miles). Prices are reasonable. Note that if you exceed one hour, it seems they charge for a full day. Make sure to allocate enough time when renting.

We actually went to the Alamo rental center as they were short staff at National but everything went just fine. Plenty of vehicles to pick from and in good condition.

We have used QEEQ before and it works real well. No problems and convenient website.

We never had such a smooth and quick pick-up experience as in Chicago. Great job!

Smooth and really good prices!!

National was great. no shoddiness or crazy amount of deposit. and got a free upgrade. and they truly meant that as well. didn't come back home to a massive bill on my credit card. will use them again in the future

Like: At first, my heart sank a bit when they said they didn't have the SUV size I had reserved. Was quite please when they told me they had upgraded me to the a Suburban with dark-tinted windows. Felt like I was driving around in a Presidential Security Detail.
Dislike: National personnel weren't where I expected to find them, but other rental agents pointed-out where I should go.