I thought the acting and 80s setting was very good but the show just didn't do it for me. Slow and boring - I didn't get all of the suspense that people were talking about. I did really enjoy the dynamic between the 3 kids (and Will) and Eleven. Decent show but I don't get any greatness from it and certainly wouldn't give it 9.1 that is has on IMDB.
And I wouldn't say the show is scary or creepy necessarily outside of a handful of scenes.
I think LOST is overrated. To each their own.