I live right next to you, and you're never open but I finally got to experience the wonder that is Tenoche. The salsa is adequately spicy and you know it's authentic when they dont try to fill up your tacos with lettuce and tomato and other useless fillings. I also had the horacha which was rather sweet and tasted a bit like toothpaste but otherwise, was as expected.
The bistek tacos were flavourful and not dry. I was full the whole day. For $12 this isnt bad but it's obviously not US prices and portions. The main drawbck really is that the wait was kind of long. (I think we were waiting half an hour or more) but the nachos (a given) kept us preoccupied.
Might I add, a cheaper authentic option might be Latin World on St. Clair West and Glenholme