This is probably one of the better adaptations into television of a book that I have seen and definitively the best adaptation from a game. The attention to plot details and lore is almost perfect. The show flows seamlessly and its setting is so smooth that it can perfectly immerse newcomers with no idea of any other prior material related to the plot. The actors are good and the tone and pace perfectly align with both the book and the games. If you have played/read them you will feel transported at times without annoying fan-serving callbacks and if you are new to this universe the show will be entertaining enough to propel you towards even more content and stories available set in this universe. Either way, by the end of the show you will be left wondering how long until season 2.
Honestly, this show brought me back to the feeling of watching the original Lord of the Rings trilogy and just holding my jaw back into place because I could not believe the worlds I had read of could come to life so beautifully. It deserves the praise. It's probably one of the best Netflix Originals right now and definitively my favorite new show this year, not because it hit so above any expectation I could have but because it delivered a good story so well for both new people and old fans.
PS: This review is a combination of my opinions, as a fan of the games and books, and my boyfriend, a complete newcomer to the world of the Witcher. Hope you enjoy the show!