Nice. Especially as it's made of crap. I love things made from rubbish, partly because it shows people have imagination, partly because it shows we don't need to buy expensive kits (that I can't afford), and partly because it gives me hope that I can reduce the amount of rubbish in my house with the addition of a few other bits of rubbish and some grey paint!
Nice intergration of chimney with the detail on the packaging. Perhaps you could think about some other detailing for that area - that 'bulge' with the 'pipe' coming up is probably some heat-producing or atmospheric pumping unit, so maye some sort of vent or heat sink device would be appropriate?
I especially like the port-hole windows. I helps give it a semi-industrial, mining-colony type look if you know what I mean; it's probably in a fairly harsh environment, not some gorgeous tropical pleasure-planet.
Anyway, yeah, nice job, oh if only I had some Hannah Montana toys (or, maybe not)!