I have never played Witcher, or read the books, and I know nothing of the story or premiss. However, I thoroughly enjoyed the show, Henry Cavill was fantastic, and all the characters are intriguing to watch.

Fantastic world building, no hand-holding, very immersive.

Only critique: plot can be hard to follow, the three or so storylines only converge on episode 4 or even later. Just know that the season spans several decades, and jumps backwards and forwards to tell the story, which is hard to judge as many characters don't age.