Best game Kirby has to offer, especially if you're going for 100%. Getting percentage points is actually useful too, since the things you unlock actually do things for you unlike in Superstar where it's just do the things for the points. I think the bite sized levels really compliment both the simplicity and experimental nature of Kirby. The bubbles letting you keep some copy abilities for later also helps with that experiment bit, since you can't choose which ability you're going to have as a backup (unless you use the bubble ability) you get put in situations using abilities where you normally wouldn't. The chests taking up a bubble slot also adds a bit of resource management to the game. Though I do think the health from the bubble system is stupid, it's a Kirby game so already easy, and the levels are so short even if you die it won't matter too much. Oh also you get to change Kirby's color with unlockables, instant 10/10.
So yeah, if you've played a Kirby game before or just want a chill quick platformer play this.