That one hour arguably ruined the entire series. Regardless if it looked beautiful or how well it was shot... it was quite possibly the laziest piece of television writing ever. The long night and the night king specifically were slowly built up over the course of the show to be this world ending event, and were quickly disposed of with a single thrust of a deus ex machina dagger. And in the process, making Bran's abilities, the azor ahai prophecy, and Jon's parentage (which all consumed a great bit of screentime throughout the show) all completely pointless. Honestly, it makes it hard to even enjoy early seasons when the show was at its peak, because you know that all of this intrigue, nuance, and prophecy amount to nothing.
Then there is the finale...