Oh man, this is a tough one! (As of writing this, I haven't made a decision about which I like more).
Polana's, being longer and more challenging, therefore more my cup of tea, felt the more solid level (first good umbrella challenge I've seen for some time), but I liked the atmosphere of Healy's more.
I hope that story of this level won't offense anyone, it's all meant as a joke.
Good job you said this... Like Healy said, you really could have done with explaining the Czech culture in the level.
The endings of both levels fell a little flat - Healy, it would have been nice if you'd flagged in different speech to... more or less everyone, after getting the umbrella.
It's hard, but I think I'll say
Healy won on atmosphere, as Christmassy-ness was all I really specified. But it was really close, so well done both of you!
My favourite sequence of either level was the umbrella challenge in Polana's; there aren't enough of those in my life