A lot of tapas restaurants make the mistake of creating an ambience that's too Spanish: Flamenco music, gaudy art from Spain, the mandotory flag of Spain, etc. I once went to a tapas place in Barcelona away from the tourist spots. It was a small, a little hole-in-the-wallish, and no piped-in music. Instead, a street musician with a guitar played American rock classics outside the restaurant. But this place had great food.
That's what Ocho reminds me of everytime I go. The space is tiny and crowded with no visible decor to let you know you've just walked into a tapas bar. The first time I went, Tom Petty was the background music. And the food is delicious and very-well priced as tapas go. We tried 8-10 dishes, drank beer and sangria, and the bill was less than $40. And our bellies were full.
Ocho is across the street from La Isla (Puerto Rican) and down the street from Minotaur (Mexican). I call this area the Ballard's Latin triangle of restuarants (I'm purposely ignoring the chain restuarant Azteca next to Ocho).