Freshly-made burritos, just as "fresh" as a certain large chain sandwich joint's and treated about the same. Chicken and beef sit in liquid in warming containers as do most warm ingredients. Extra charge for veggies or guacamole doesn't sit right when a burrito itself is $8-9. The chain-ness of z-teca means that the contents always taste precisely the same and you can decide for yourself whether that's a good thing or not. A non-beef or chicken burrito didn't seem to contain much of the requested protein.
Pluses are that the burrito gets grilled when it's finished being assembled, but it might be necessary just for food safety to bring the hot ingredients back to a safe temperature. A variety of beverages, including beer, are available.
The atmosphere is positively industrial inside, lots of metal in the seating area, food served on metal trays in metal, and chairs that appear to be made with wood chips.