This is a Woodland Mansion seed at spawn. I just created a random world, and there was a woodland mansion! If for some reason you spawn far away from the Woodland Mansion the coordinates are X: 166 and Z: 246. Seed is -594594125817182135. This is for PS4 and XBox One only. Sorry PC users, if you want to use this seed do yourself a favor and buy an XBox One or PS4. Note that you need Biome Size on Medium.