Depending on what kind of drama you want to watch, it can either be a hit or a miss. If you want a nice romance with a plot that (more or less) makes sense, Are You Human Too? will make you happy. If you are a big sci-fi fan and that's the reason you want to watch it - it might not meet your expectations.

THE GOOD

Likable characters with realistic flaws.
The majority of the motivations make sense and we can clearly put ourselves in the characters’ position. Some are better developed than others, but it's something we can't avoid in dramas. As long as the mains are there making sense, I am content. Not to mention how refreshing it was to have so many moraly gray characters.

The romance.
If you like fluff and cute stuff, this will be one of the nicest shows you have seen. I could clearly see the chemistry between leads, and there isn't any unnecessary love triangle. It's hard to describe the growth of emotions in terms of Nam Shin 3, but we can clearly see that in our human protagonist So Bong - how her relationship with NS3 develops and how slowly her feelings change. The acceptance that she loved a robot and not a human was nicely presented.

Cinematography.
Being a person who values the visuals of the dramas, I must say this one was extremely pleasing to the eye.

The emotional aspects.
Basically, this drama is good at 'playing' with your emotions. In a good way. The pacing was fine and they didn't randomly change from sad to funny scenes. Since the characters were gripping, I could easily empathize with them, which made the watching that much more enjoyable.

THE BAD AND LESS CONVINCING

The villains.
I truly loved what they did with Nam Gun Ho. The way he played people around him to be played at the end. That said, the true main bad guy of the drama disappointed me. His motivations did not make much sense. They tried to frame him as a heartless person, but then introduced some scenes clearly showing that he is not as bad as portrayed and even he wants to protect people important to him, so in the end, it wasn't consistent.

The romance.
While for a fluffy part it was amazing, I believe they did not explore the robot-human relationship to the full potential. There are many questions that they never delivered answers to. How will society react to that relationship? Will So Bong be happy with a robot that might never truly love her back? Why had they never talked about getting old and how will they work it out? What will happen to Nam Shin 3 after So Bong dies? Is So Bong going to be okay without any intimate relationship? The relationship was cute, but the social commentary about it could have been deeper.

Real Nam Shin .
How much I loved his character and how much I did not want the writers to give him a quick last minute redemption arc . After all the bad deeds he did, we don't really see much change in his character. Instead of showing us the aftermath of his decisions, we get 'one year later' with Nam Shin being fine and everyone accepting him. No true apology, no reflection on what his choices brought on people he claimed to care about. The writers were so fixated on giving us a happy ending they did not stop for a second to think if it would make much sense.

Ending.
If for you, getting a happy ending is the most important part, you won't be disappointed. If you rather have a bittersweet ending that fits the plot and is consistent with the characters, this might make you angry. The last ten minutes of the drama introduces even more questions than all the preview episodes combined, and gave no answers. We don't know what happens with the majority of side characters. What will happen to M-City? How were the legal aspects resolved? Why only few bad people who broke the law were punished for it? How is society dealing with AI being a real thing? The ending was a big plot hole.

Unresolved moral and social issues.
I would have no problem with drama not dealing with those deeper problems if they weren't introduced in the first place. But they were, so they should be explored more. When the robot is not just a robot? How human the robot must be? Is being conscious enough? Do you need to be able to feel emotions too?
Another EXTREMELY interesting plot point that was not explored at all: is the creator responsible for everything their creation does? If said creation is self conscious, can the creator control all aspects of its life? How far can the free will go? What is free will? The whole sci-fi aspect of the drama, instead of driving drama forward, has been just a plot device created as a background for the romance.

Ignoring the characters’ traits when they are not necessary for the plot and forgiving characters without a reason.
So Bong is a fighter, a really good one. Former athlete, currently bodyguard. And it's all ignored later in the drama. She does not fight, does not defend herself. The whole skill set is simply non existing. Reporter Jo is another character that has no place in the drama. She is suppose to be a funny friend of So Bong, but is she really? She kept getting everyone into trouble, manipulated them and used So Bong for her own profit. The fact that So Bong kept her as a friend till the end is irrational.

Overall, if you are searching for romance driven drama with emotional baggage that is not too heavy, go for it and you will love it. If you want more sci-fi, give it a try for a few episodes, but don't have high expectations. This drama presents many amazing dilemmas, but never explores any of them, and that was the biggest problem I had.