It's entertaining. I don't think we'd be watching it if we were not trying to improve our Spanish, but it's reasonably entertaining. Definitely better than studying some book, or flashcards.
It's helping with comprehension. We are hearing native speakers speak at their normal speed. We've already seen improvements in our comprehension.
It's expanding our vocabulary. As we are watching the show we'll look up words that we don't understand. We quickly learned the words "chantajear", "asesino" and many others.
The only downside so far has been that watching does not get us speaking. Expanding our vocabulary and comprehension is important, but we need to do more to speak. I'd love to hear ideas about others do to keep up with their languages skills.