Seed will allow you to get access to a large plain village and mansion almost immediately. The settlement is very close to the spawn point, you can find it in a few minutes. The mansion is located a little further. You can go to the forest and look for it yourself or use the coordinates -600 ~ 480.
How to use Plain Village and Mansion seed
Start the Singleplayer mode
Select ‘Create New World’
Then click on ‘More World Options…’
In the ‘Seed for the World generation’ field, enter -903161258036600075