It's close enough to the source material to keep the entertainment value, and while it's toned down to be more family friendly and everyone is a lot more attractive and accessible, it even adds some details, characters and aspects that fit in perfectly. It gets.the fairy tale of "Locke and Key" right, and manages to resist the temptation to go too deep into the teen drama aspect, but that's a demon that seems to lurk behind every series these days, trying to worm it's way into yet another interesting setting, a destroyer of world that makes this series' antagonist pale in comparison. Some additions seem rushed, and some plot developments demand everyone to be really stupid, but it's the exception.
But, just like the whole cast, everyone does a decent job, even if that job is being evil, or being annoying, or being brooding - I was quite taken.by Darby Stenchfield peformance, who I'd never heard from before, but there were no real lows here. The CGI does the job, just like the whole technical side - most of the time it's nothing to write home about, but it's all coming together nicely and manages to find it's own style and stick with it, and that's laudable these days.
If you find yourself in need of something to bingewatch during the cold and wet season, this is comfortable, but not boring. It doesn't have any big messages and is certainly not unforgetable, but it's also not just killing time. Given the harsh, unforgiving style of the source material it's surprising how wholesome and warm it is, how positive and in love with it's characters and setting, and if you are in the mood for something like that, you could do a lot worse.