Good characters. Interesting story. Nice style.
The mechanics, however, are at a minimum poorly explained and often absolutely terrible even once completely understood. I feel that many of the people who like Persona 5 were held hostage by the really good parts and have errantly convinced themselves that the awful parts are somehow not destroying an otherwise lovely game.
Key example: Want to save your progress? Okay, go to your room. Except, wait, sometimes that advances the day without offering a save opportunity. What the heck?