I travel nearly 45 weeks a year and about 15 countries a year. To say I have seen many airports, hotels and auto rental facilities would be putting it lightly.
This rental facility is off site so for that it's a little more work and I'm deducting one star but otherwise this place is really good.
There are constant shuttles that run from the car agency to the airport and from the airport to the rental agency. I don't know the exact timing but it is about every 10 minutes or so. The nice thing about that is returning the vehicle is easier in that your not trying to navigate through a congested airport, etc. The rental agency has all of the agencies (Avis, Alamo, budget, Dollar, enterprise, etc) all under one roof. This also makes it convenient.
This isn't the easiest place to rent a car but it is up there and better than 80% of the large airports I frequent.
Enjoy!