I have only seen the first episode, but I feel very excited about the rest of the show based on this opener.
It was pretty intense in moments, very dramatic, well filmed, well set up for the feel of what I assume is the early 80's (I don't remember if it specified). But the nostalgic elements are fairly realistic and not heavy handed.
The Hardy Boys themselves (Frank and Joe) are very well chosen and great to watch.
This first episode mainly set up the following mystery, and it did not give a lot of feel of future investigation, but I think it was carefully giving you reason to care about our protagonists.
So far, no cursing. And relationships did show 16 year-olds kiss briefly. But I expect to be able to watch this with my 14-15 year-olds (and we are very careful about what we watch).
The feeling I come away with was fun and exciting, and poignant and dramatic.
I think this goes somewhere between Spielberg and Abrams' Super 8 and BYU's Granite Flats. It has feeling elements from Stranger Things, but more appropriate to let children watch, in my opinion.
Really expecting a lot