Eva's -- Ecuadorian Restaurant in Park Slope
You should check out this earlier report:
I can add my own general impressions: I liked Eva's when I went there a few times last year, though I haven't been there lately. It was mostly very good, simple, very inexpensive food. It's hit and miss communicating in English. It's a very cozy, very no-frills, relaxed atmosphere - with the big exception that when I was there a big tv was going at full volume.