I watched this show while in Spain. Not expecting much of it I was very surprised. I really liked the casting, all in all very good acting. José the lead character is a low level street dealer who's determined to become the kingpin of Madrid. Ruthless in many ways but still very concerned about the wellbeing of his family.
The settings and characters are credible and realistic, however some of the characters stay a little bit on the background and are superficial, in my opinion they should have deserved more depth. Especially La Rubia played by Teresa Riott. The woman is just georgous and plays her role so well, despite she has a minor role, I'm sure she has the potential to become one of Spain's leading actresses.
Truly hope there will be a season 2. If you liked series like 4 Blocks, Zero-zero-zero, Narcos....this one is for you. Have fun.