Not bad, not bad. Came in tonight on a Yelp-inspired short-notice reservation with a group of 17 hungry people. The restaurant was right around the corner from our hotel, so this was an easy choice for us.
Tres Potrillos treated us right. Drink orders were taken quickly, plenty of chips and salsa on the table. We had multiple servers and once we made up our minds, our orders were taken. And within a very reasonable amount of time, our orders were delivered, again by multiple servers. (Other restaurants should get a clue here - any group this large requires more than one server!)
So, after all this, why only four stars? This is a good - but not great - Mexican restaurant. Food was decent, maybe even a bit better than decent. But I've eaten Mexican in multiple states and countries and this is a more American-ified food rather than a traditional plate. Regardless, highly recommended!