Like ravines, igloos are a staple of the ice plains biome; however, it is not common to find one built into the side of a hill. For players with a more reclusive disposition, this seed will allow you to dig out the igloo's doorway, which is otherwise openly accessible from the surface.
This igloo does not contain a secret entrance to a basement, though it does come equipped with a bed, crafting table, redstone torch, and furnace. (Prolonged use of the furnace will cause the ice window to melt.)
If you're up for a challenge, the closest igloo with a basement can be found at coordinates: -187, -259. The basement abuts a cave system, so many of the nearby zombies will be drawn to the villager -- or potential bait.