I came here for the first time in a few years for work lunch. The place was pretty quiet inside - though the outside tables were full.
The service was quick and pleasant. I opted for the verde pork chili. It was really good though, not as spicy as I had hoped. The serving was generous - more than ample for one lunch, brought the back home for left overs.
While it was pretty quiet for us, I have been here before when it was quite busy and loud. That's partly the nature of the place - lots of hard surfaces, bare walls, etc. And, yes, when they are busy, there is a lot of rushing of servers around, etc...