I agree that the series don't have any physical intimacy scenes but the chemistry between the leads is great with their acting. Before starting the series I personally felt to drop after 10 episodes if it was boring but i couldn't stop myself from completing it and it was more interesting.
Those who like detective genre can go for this drama without a second thought.
Coming to story its just very simple hero being undercover agent need to catch the villain in which heroine is involved and he approaches her and in meantime they not knowingly fall in love with each other and care about each other and finally reaches their goal.
Coming to ROMANCE as i said their is no intimacy but little fights between them , care between them and pain when apart from each other is neatly shown. Not just they both but the second lead love story is also very sweet with many complications and finally together. Along with that their was comedy which was enjoyable.
Coming to DETECTIVE genre the story is known yet the scenes are very interesting. During their travel we will be on toes about what happens next. Later its totally hero who shifts sides from one to other makes us curious to know his plan.
Drawback : suspense is missing we will already know what is the basic plot so not much thrilling.
I personally felt at least in last episode the hero should have proposed her but not done.
after 30 episode (completing the trip) their was not much story but was just rotating around hero and his tricks to catch criminals which was a bit of drag to the story.

totally the show was great to watch but if you are looking for complete romantic you can try once and for detective you can surely go for it.