I loved it! Some ideas to fix and elevate the fun:
1. Countdown on level start. It would help the player with initial mouse placement.
2. Adjust the collision boxes for the tiles and the bee a bit. The easiest would probably be to make bee a circle and cut the corners on the tiles that stick out. This would make for a smoother movement. Just don't make it too easy though!
3. Buzzing and other noises. Just take the mic and do it! The game would be hilarious. A cappella OST would be glorious.
4. Make sprites for the dead bee (sounds weird -_-) and put them on the level on death. This would make for a nice overview of progress.
5. And more obstacles would obviously make it even more interesting.