I don't usually get on here, but for minecraft fans, I figured I'd post some of my worlds here from now on. I won't ever make the downloads require something or be difficult. That really pisses me off too.
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This World is like you think by the name. Your in a mansion and have to escape by finding a key (Lever). It's fairly short and the download is from mediafire.

Directly download: http://www.mediafire.com/?309iyptax6yfa60

or

Read more in this other thread: http://thecolorless.net/posts/show/55852?offset=0#post-56105

Feel free to say what you think of it here or at the other thread's location: The Colorless.net

This is cool but you should have put this in the Minecraft thread.