Miro is a lovely Spanish restaurant with a great staff and excellent food. I love the ambience, well-appointed dining area and bar with flamenco music playing in the background, and the food is top-notch.
I've visited Miro on three occasions and both times, I was highly impressed with the dishes I ordered. The pork tenderloin is tenderly cooked-you could cut it with a fork. The tenderlion is served with chimichurri sauce, with black beans, rice, and plaintains. I question the "Spanish-ness" of the black beans and rice, but who cares? The wait staff were gracious on every trip, explaining specials and traditional Spanish cuisine to the uninformed. If you've never tried tapas, they have what amounts to a "Tour of Spain" (re:Olive Garden) where you can sample the hams, cheeses, and fried goodies.
My only complaints are the wait times and rather-expensive sangria. You would think a restaurant in Ballantyne would plan for big crowds on weekends. Visiting Miro during the week would be optimal. The sangria is $24 for a pitcher. But whoa, it was awesome! If you've never tried Spanish food or would like to impress your significant other, Miro's is overall a good choice.