Goblin is a classic and it’s easy to see why it has gained popularity but this one wasn’t for me.
Strengths
Acting was strong and thought Yoo Na and Kim Dong Wook were absolute delights.
Kim Eun Sook really capitulated audiences
The romance chemistry was sweet
The filming settings were magical also but struggled to get away with the concept and age difference.

Loved the Korean mythology elements

Weaknesses
Slow paced
Age difference too great between leads - understandable after time skip but creepy beforehand
Too many tropes imao