I did read the webtoon and with the very first episode I was kind of disappointed, though that didn't stop me from continuing the show. After the first episode, I enjoyed the show a lot more. I don't know if it was just me or that I kept connecting the show and the webtoon together... Anyways the show kept the true meaning of the webtoon which I really appreciate, because it was one my reasons why I love reading Sweet Home. The show also kept a lot of the characters the same with a little mix into it, meaning things were gonna be different from the webtoon. I liked that because I wouldn't be able to expect things to happen. The ending was also very different from the webtoon even though I loved reading that ending, I really loved the ending they did for the show. They left it more open meaning there could be a season 2, hopefully!
Overall It is a great show with a hidden meaning. If you do not like the first episode like me I recommend you try the second episode. I hope there is another season and everyone in the show did such a great job!