A slow slice of life type show. A rural town with a hospice is the setting so you have youth clashing with death. There is nothing mysterious or suspenseful... it's slice of life.

The cast consists of three new-ish actors and an experienced surrounding cast. Kai, Kim Jin Kyung & Lee Ye Hyun being the three newcomers.
Lee Ye Hyun was the standout of the three for me. According to MDL it was her first credited performance and she was the strongest over the course of the show.
Kim Jin Kyung also seems to have her first credit in a dramatic role and she was alright.
Kai had some experience and he started strong but as the show went on I was less impressed with him, I think the writers/directors share some blame though.

The writing and directing was a subpar. It was messy to me even when you give them the benefit of the doubt and recognize slice of life can be messy but entertaining and have value. They were stringing things together in a very unconvincing ways. There have been lots of movies and shows about death and loss from South Korea and I don't think Andante stands out despite its entire focus being on those subjects.

I don't see any re-watch value. It's slow and once was enough for me. It's not a bad show but it's not a very compelling show either.

I'll end on a positive note and re-iterate that Lee Ye Hyun did a good job and I hope to see her cast in more dramas.