The original movie was done by the Italian, which in my opinion is the best. The Spanish then did a remake a year later & then this Korean version came out, yet another year later. I actually prefer the Korean version to the Spanish version, as I feel that the chemistry between the Korean actors are much better. My verdict being the Original Italian version being the best, followed by this Korean version & lastly the Spanish version. Go check out the other two versions of the movie, if you haven't done so.
1) Italian version - Perfetti sconosciuti (2016) 2) Spanish version - Perfectos desconocidos (2017)
1) Italian version - Perfetti sconosciuti (2016) 2) Spanish version - Perfectos desconocidos (2017)