It's extremely sweet and realistic and personally is up to my preferences. It is definitely a show I'll be re-watching many times in the future. I would also like to mention that it's filmed really well, sceneries are eye-catching, attention to detail is clearly evident and of course the cast members and staff are talented and beautiful people who have done their respective works skilfully.
Ps- it's my first time writing a review so you can surely judge by that just how much this drama has touched my soul :)