you know it's a good restaurant when.... here's my theory on how to pick a good ethnic restaurant. when you walk in, look around. if the place is frequented by the ethnic group of the restaurant, chances are you're in a good place. at any time, you can walk into el senorial and see the place packed with latinos. the beans, flavored with chorizo, are really good. i like the tampiquena- steak with grilled green onions, rice and beans. the milanesa is average- a bit thin for my taste but it's decent. the service is good and the margaritas are decent if you ask for anything but rail tequila (this holds true for any restaurant or bar).
overall, it's a good value. i just hope it doesn't get too popular and lose it's flavor.