IT IS EASY!
The AUX is located at 2223 Washington St in Evanston, IL.
Turn on Washington St from Main St between the Baby Toddler Nursery and Ward Manufacturing. Initially, it seems like you are entering an alley, but the path opens to a garden on your right and then the brand-new home of The AUX next door.
There is parking located directly in front of the building. While it can be a bit tricky to find the first time, you will be glad you did!