This is one of those places you keep hearing people rave about..... and add me to the list. I kept encountering friends who would tell me about their amazing meals but never found myself in the vicinity to try it. One night at a party, someone had brought Sin Frontera's ceviche and it inspired me.... I HAD TO HAVE MORE! Their food is outstanding. There are a lot of menu options and everything I've tasted is fabulous. The fajitas are THE BEST YOU WILL EVER HAVE. The ceviche is addictive and their guacamole is also fantastic.
Their margarita is not for the faint of heart. It reminds me those old ~Forest Dr. Mexican Cafe~ margaritas (long-time locals will know what I mean). They are tart, strong, and quite large.
I recommend this dining experience to locals only. It is not in a tourist location and would be hard to find. The atmosphere is okay. The service is efficient - there is some language barrier. The owner is typically on-site and makes the rounds to each table which is nice.
Definitely try it if you enjoy latin food.