The story of Luigi's Mansion 3 is split up into somewhat bite-size sections via floors, rather than 'mission select' like how it was done in LM2, which I personally don't mind either. For a hotel, each section is very diverse from one another (the ghosts have incredible architecture skills, though I wonder how all of it can exist in a hotel lol). None of the plot and tasks ever felt samey to me. There is some back tracking at times, but it doesn't feel like padding.
Compared to past LM games, the controls will take a bit of getting used to, but once mastered, you'll have a spooktastic time showing the ghosts who's boss.
The local multiplayer minigame modes are nice, however a lot of them are locked behind paid DLC (9.99USD). Same with ScareScraper and extra costumes/features within that mode. At least you don't have to buy the DLC in order to play through the costume-unique floors, as hopefully others you team with will be wearing the respective costumes. Regardless, the extra modes are still pretty fun to scour around in with or without buying the DLC.