Minecraft wiki entry for Best_biomes_for_homes, associated text: Plenty of snow and ice.
The snowy landscape can be very appealing, especially when near to its mountain sub-biome or other snowy biomes.
Igloos sometimes generate here and contain the basic necessities for a starting player: a bed, crafting table, and furnace. Furthermore, an igloo has a 50% chance of containing a basement (under the carpet), which can contain rare treasures like a brewing stand and a weakness potion, as well as having a loot chest with basic loot and one golden apple, and cauldron. The player will also find two villagers, one being a zombie villager, locked in cages.
Snowy villages can generate here.
Village shepherd houses generate chests which can be looted.
Snowy villages are the only place where sheep, cows and pigs spawn in this biome.
Some snowy village houses are made out of packed ice and blue ice.
In Bedrock Edition, skeletons and strays are the only monsters that can spawn in this biome, so the underground may be safe to explore as the only other mobs that can spawn are zombies from sieges, pillagers from pillager patrols and mobs from mob spawners.
Rabbits can spawn here.