I have been finding this for a long time! Here is a quad witch hut to make the bigest witch farm ever! You need to set both “World Size” and “Biome Scale” to large and you’ll see 4 witch huts!
1) x: 532, z: 3
2) x: 370, z: 20
3) x: 370, z: -155
4) x: 515, z: -155
Haha my bad! Got so hyped i forgot the seed... i re-edit the post
Still a valid seed even in the new Villager and Pillager update!!