Like:
- Well directing from Director Lee Jung Hyo, who is acclaimed PD in many dramas
- Screenwriter Jung Hyun Jung wrote exceptional dialogues, some are witty some are poetic. Many beautiful quotes can be retracted from this drama
- Mature love story with grown-up characterizations and relationships
- When the drama introduceds the ML, Cha Eun Ho is described as a "total eye candy" (English sub). Though it's cute, but I am wary that the production exploited Lee Jong Suk's fame and good look as the main pull for the story. I have seen many dramas using one actor/actresses who is good looking as the main draw but then the shows ended up bad. Fortunately this does not happened with this drama. All roles are played well by the respective actors and actresses.
- Actress Lee Na Young was wonderful as Dan Yi who fell into many hardship in love, family, career and personal life and her optimistic attitude and relentless attempt to go back to her feet, initially without Eun Ho's help. A great message for women's self-reliance.
- Actor Lee Jong Suk did a great job acting up the two sides of Cha Eun Ho: calm, wise, cold, refrained in public life and funny, jealous, romantic, caring in personal life.
- ML and FL have a great and natural chemistry during stages of their relationship: starting as best friends of 20 years, to awkwardness during the first stage of romance, finally to real lovers.
- I love the execution of the relationship dynamics between boss and employees and among employees.
- Side stories of other couples are beautiful and are given a good amount of screen times without overwhelm the main love story

Dislike:
- IMO the plot on the mysterious writer is unnecessary. I guess they want to add some mystery/secret/thrill/investigation spice into the show but unfortunately it is not connected to the main story. The revelation of the mysterious writer in the end while the drama is already in anti-climax and viewers already somewhat bored.
- A few episodes to the end the drama loses the steam when Eun Ho and Dan Yi finally get together and Seo Joon and Hae Rin get closer.
- I agree with other reviewers/commenters, what happened to Dan Yi's daughter? Since there are many female viewers definitely a story about a daughter who has to be sent away to the Philippines due to bullying victim at local school demands a story of her own. IMO she's just a filler, better not to have a story of Dan Yi having a daughter.