Minecraft Seed: -100058369
First, teleport to the village at coordinates: [-440 ~ -696]. In the village, there is a blacksmith’s house with a chest containing 13 obsidian blocks and 1 iron armor.
Thanks to the 13 obsidian blocks, you can immediately open a portal. After that, you can find a stronghold at this coordinates: [-798 ~ -958].
Above the stronghold is also a village, but this one has no blacksmith houses.