I've lived in Spain for a year and traveled widely across Zaragoza, Leon, Cuenca, Barcelona, and Madrid. Tapas are normally small and unless you can afford to buy 5 or 6 tapas in the $8-14 range (each) accompanied by a good bottle of Rioja wine, you should opt for more americanized environments such as Xunta or Rincon de Espana. A larger portion is a ""racion"". The Spanish Moorish architecture and external ironwork are unique. The dim lighting, couches, and soft Medditerranean sounds in the background are the major draw. It's a great place to bring a colleague for drinks, a group of friends with eclectic tastes, or a special friend you want to relax with. I suggest you order the Patatas Bravas (spicy fries), the mussels, the jamon serrano, and el pollo andaluz. Yes, it's expensive and the waitstaff is not Spanish... however, the experience is anything but ordinary.
Pros: Moorish Ambience, Rioja Wine Selection, Great patatas bravas
Cons: Price, Arrogant waitstaff