Almost perfect!
The acting was awesome, very natural. Both actors were nuanced in facial expressions, tone of voice, and body posture. It was a joy watching them interact as their characters.

The show had a positive message and multiple thoughtful and memorable quotes.
There were a few comedic moments that made me legitimately laugh out loud.
Music was unremarkable, but didn't distract either.

The story felt a lot more rushed in the last episode than it had in the previous four episodes. For this reason, I wish they had made it six episodes. The ending wasn't completely satisfying because of this, in my opinion, and brought my rating down. I think it still has high rewatch value though.

SPOILER ABOUT ENDING:
... ... ...
After all the tension and build-up, having their first *mutual* kiss at the end interrupted left me feeling frustrated and disappointed, lol. I wanted that sweet resolution to go with the relief and happiness.