Felt I need to write this review...

Rating: 9/10 (23 December 2019)

Because this Marvel generation can't appreciate cinema. There were 2 movies this year that really took me back to the golden era of movies (50s, 60s and 70s). These are "The Irishman" and "Once Upon a Time in Hollywood". Both have great performances and just great scripts, dialogue, settings.
In an era where probably 90% of people below the age of 35 wants to see CGI battle scenes and at least on major city in the world destroyed or why not? imaginary planets, Scorsese made an actual film, not cartoons. Unfortunately, the below 35 generation, if not obsessed about Marvel, only know Scorsese from Goodfellas, The Departed and Casino, which is fine, but the same guy did Raging Bull or Taxi Driver, which probably again, 90% if the people below 35 would find boring.
There are folks giving this movie a low rating complaining about the pace but they "love" Godfather. Are you kidding me? If you truly love Godfather, this is as close as you get to that movie. Of course, not the same league, but it's similar.
I do think that the de-aging worked, even if distracting at first. What I don't think truly worked and that is why 9 and not 10, is the movement of the actors. Especially De Niro. Pesci had a relatively static role and he was older. Pacino somehow found energy to be credible as a 50 yr old Hoffa. De Niro in some scenes, not so much. Probably due to amount of scenes he was in. I do think though he plays the low key role of Frank Sheeran great and his narration is awesome, with the mumbling and the voice trailing off.
Overall, this is a great movie, deserving the Oscar. Not sure if there was a movie since maybe No Country for Old Men that deserved the Oscar as much.