I started this show because I wanted to see something cheerful and I had already heard about Yoon Shi Yoon doing the main lead as Enrique, a Korean Spanish guy who returns to Korea after living in Spain since he was a kid.
First, I'm from Spain, so I was interested in the story of a main lead who comes from my country, talks about the Clásico (the match between the Barcelona and the Real Madrid), about a our food, our music... Second, I saw Yoon Shi Yoon in Hit the top, and I liked him very much...I don't know why , but the way he acts remembers me  Yong Goo when he just started.
So... Positive things:
1. It's funny, I've liked Enrique a lot, with the exception of him talking in some weirdo Spanish (really, why couldn't they put somebody really speaking in Spanish?). He is supposed to have been living in Spain for more than 15 years, it's impossible he speaks soooo bad). But for the rest of the time, even if I'm aware he is kind of exaggerated, I loved his role.
2. The seconds leads are ok. I liked too the fact that although there's one lead who greeds for the girl, he's nice and there's no usual love triangle as in others k-dramas.
Negative things:
I'm sorry to say this, but I'm not a big fan of Park Shin Hye. Don't know why, but I have the feeling she has always done the same rol, as a crying baby who needs to be rescued. After some time it's kind of tiring. I don't say she is a bad actress, because I'm not, and she has a nice voice...but the three times I saw her (in You're beautiful, The heirs and this one) it was at I was watching the same drama, although with a different hairstyle.
I can't understand how a guy as cheerful as Enrique, so full of life, wouldn't get bored of her in 5 minutes.
There are more flaws in the story, and I can't say it's an amazing show, but it's ok to pass away the time.