Are you looking for a thiriller? Something that will keep you on the edge of your seat? If yes then for the most part this drama probably isn't for you. But if your looking for a sweet funny romcom this this drama is probably for you!

Story - the story was great at first. It kept you on the edge of your seat while making you crazy waiting for the next episode. Soon after around ep 16/8 the drama lost its thrilling spark. The dreams became repetitive, and usually had the same outcomes. If you think of this drama as mainly romcom, I think you would enjoy it though. :)

Acting/cast - I liked the cast. Suzy was great, she improved quite a bit and her character was pretty funny sometimes. Lee Jong suk was the same as always. His performance was enjoyable, although I think he should try to play a different type of character next time. As it feels that his character is always the same character in a different world. The rest of the cast was great!

Music - I really enjoyed the Music, especially Come To Me by Lee Jong Suk, and Lucid Dream  by Monogram.

Rewatch Value - I feel like you could rewatch this drama after a long time but if you rewatch it right away you will get bored by the repetitiveness. 

Overall - This drama was a good watch. I watched around one episode a day so I didn't get bored by it, and enjoyed it quite a bit. I recommend this if you are looking for a cute romcom.

(Sorry for any spelling errors, I wrote this on a phone and in a hurry)