We had a Groupon to try out here. Serrano's seems relatively new in the area in Henderson. It looks like it used to be a Taco Bell, except I can tell you the food is better here than the old Taco Bell.
Everything looked clean in the joint. They had decorated for V Day which I thought was cute. The menu seemed pretty thin. I'm grateful that it didn't have a thousand options, but none of the options really spoke to me. I went with the Serrano burrito and it was fine. It doesn't go much further than that with the description.
The salsa bar though was great. Different styles of salsas (somewhat labeled) were there for the taking. The other items in there did not look old and gross like these bars have a tendency of doing. And the food was pretty quick to get and go.
There really isn't anything wrong with the place. It's a decent little set up, nice people and a somewhat limited menu. Living near UNLV, there are tastier places to stop by in the neighborhood, but I wouldn't knock Serrano's if you were in their neighborhood.