I have never watched a Spanish show before and now I'm obsessed. I've already started looking for other Spanish shows to fill the void that was left behind by finishing Elite.
What makes this show fantastic, above its many other fantastic qualities, is that the character development is gradual and believable, although unpredictable. It seemed a mirror for real life. My feelings toward characters would evolve in unexpected ways, but ways I think were part of the show's design.
Additionally, the plots are palpably gripping. In the same way that JK Rowling planned out details books ahead of later books, so too does it seem the writers here had a vision behind the episodes. The way the different character arcs overlapped and connected made for a satisfying watch, even if it might be melodramatic.
Do yourself a favor and watch!