This is The Money Heist (not to be confused with The Great Heist) which was shot in Madrid and when it launched, broke the Internet in Spain. It is the most watched non-English series on Netflix. Rightly so.
Developed by Alex Pina one of Spain's best known TV Producers.
It's an Emmy winning crime drama about a heist (would you believe...) and it's subtitled. But it's excellent.
It goes underneath the skin of the robbery on The Royal Mint by looking at the changing relationships between the robbers and indeed, the police. The robbery includes hostages so their interaction develops too.
Possibly too long but that said, so well worth the watch. If you like that sort of thing....