I was really late on Stranger Things when I watched it, so I had high expectations going in. I was like you, I thought it was pretty good, but it wasn't amazing by any means.
I think I would have really liked it if I wasn't expecting more, but I do think it's a good show. The acting is really good (besides Winona) and it is like a throwback show. Really well shot.
Agree its a solid show. I do like it. It's just not amazing for me. The kid actors are pretty good. Winona is just kind of meh for me. Bigger name, but doesn't make the show.