Yo this place amazing.
100% a top-5 option for best burgers in Charlotte.
Couple things: Its not a fancy, or really even that nice of a place. Its the standard "been here for a long time and we want to keep things like they were" kinda place. The burgers are what your grandparents would start a story with "back in my day,"meaning they aren't pretentious with organic, locally sourced, or fancy Whole Food vegetables. It is just a really awesome burger.
Zach's is a Charlotte institution and you owe it to yourself to eat there at least once. It was also the scene of a key episode of Homeland (season 1) so you can channel your inner Carrie. That might be weird though. Just eat the great burgers.