The title says it all!
I think a bunch of "Yelp Reviewer"-types, snobs on their high horse, expect an absolute cinematic masterpiece with gripping plots acted out by Daniel Day Lewis and Meryl Streep and have consequentially tanked this unique diamond-in-the-rough show's rating. If it weren't for the 1-2/10's I'd probably rate it a 7/10.
If you want an easy-to-watch, lighthearted show then this is a great one! It's no Twin Peaks, Jack Ryan nor Joe Pickett (not E P I C). But consider this...it's primarily a show about 2 seemingly different individuals FaceTiming each other in the dead of the night - this is where a majority of the show takes place! That's not a lot to work with.
These 2 characters befriend one another merely out of their shared experience, their struggles with insomnia. Despite their differing demeanors, they have a a tight bond and a surprisingly great dynamic. It's not the most exciting thing, but it's a pleasant, soothing show with a premise moved by silly, trivial happenings in their lives that many would consider forgettable, casual yet relatable events. I appreciate that!
If you're looking for something more compelling then this is not for you. I personally look forward to a season 2. My hope is that they really expand on the background characters - I quite enjoyed Danny's eccentric neighbors! It'd be great if a few more characters are brought into the mix (perhaps more grounded ones), as the plot slips into the real world (based on the ending).