Actually I won't ever understand why rude jerks are so popular (in general, even outside dramaland) and why the girl would have any interest in him, since she's not after money nor handsomeness. But still somehow she ends up falling in love.
The plot is not maybe that bad, even tho body swapping and rich man x poor woman are not at all unique tropes, some parts were interesting and even funny but the romance and character development of the two leads was kind of wrong. I really felt his way of chasing her creepy and the fact that he trashed her for her status was utterly irritating at the point that I felt angry in the girl's place (also they presented her as a really strong and independent woman and they just flattened her personality episode after episode). He even repeatedly barged into her workplace to "play" and chase her, like "what you do is not even important". I mean are you for real? This is the kind of guy that most of girls fall for?! It could be okay if his behavior would have changed gradually at some point but beside the final part he stayed a rude jerk with not even a bit of respect for the girl: how come his character didn't have any development at all even tho they literally put each other shoes? I am not blaming the actor so don't get me wrong but just let me say that romanticizing this kind of toxic relationship is really not a good example. I witnessed how abusive love is and it's not something to daydream of.
So, this is to me the only big flaw that make me say no, don't waste your time over this.