As someone who watched and loved the original Money Heist (La Casa De Papel), this review will be based on both similarities and differences between the two.
The beginning of the series, Tokyo's backstory, is captivating and original yet takes elements from the Spanish (og) version. It was nice to see the screenwriters take on a more Korean style while sticking to the original story. It was fast-paced and not much of the story before the heist was shown which was slightly different from the original series but it's understandable considering the writers tried to squeeze as much of the original story for the first heist in 12 episodes (as the original version had 23 episodes meant for the first heist).
I do wish the remake showed a more original and unique approach as the show was mostly very similar to identical to the original.
The acting was, in my honest opinion, average. There were moments and actors that I adored like Park Hae Soo as Berlin or Lee Joo Bin as Yun Mi Seon (OG Monica/Stockholm) and her chemistry with Kim Hi Joon aka Denver. However, the acting didn't exceed my expectations. I still enjoyed the first half of the show that aired so far.
The cinematography and directing style was something that I truly enjoyed. The shots weren't necessarily long (most of the time) and the brightness and coloring of the show were pretty to watch.
In the end, I will say that the original version is better than this remake but it still is enjoyable to watch.