This a real solid platformer! Glad I found it before rating ended.
The simple visual style is appealing, but what I really love about the visuals is all the smooth animation. The transition between levels, the smooth spin, the confetti you win, the death particle effects, etc. It all gives the game a super polished feel. I do think some of the animations take a bit too long to get going (e.g., rotating the room, launching off the spring), but generally it all looks great.
The sound design is also quite solid. The music is good, and most of the sound effects are nice. I do wish the sounds were mixed better though. The jump sound is particularly loud (worsened by the fact that it's high-pitched, which I've never been a fan of for jump sounds in general; jumping should be a relatively quiet and low-pitch sound imo).
Finally, I really liked the level design. The level pieces—spikes, springs, doors, boxes, and buttons—are all well designed, and you get some good levels out of them. The second-to-last level in particular was really good with the misdirect. Even the base mechanic of rotating the room is really well done. It's good that you put in a cooldown; it means I don't effectively have creative mode like I've seen in a bunch of other games. My only nitpick is that I don't think the spring should freeze you in place, especially with how long the animation takes. But everything else is great.