An interesting seed that will allow you to find a large mansion between two villages relatively close to the spawn point. You will find it at coordinates 520 ~ 500. Also, settlements are located on both sides of it. The villages in the desert and on the plain are located at coordinates 200 ~ 550 and 850 ~ 320, respectively.
How to use Mansion between two villages seed
Start the Singleplayer mode
Select ‘Create New World’
Then click on ‘More World Options…’
In the ‘Seed for the World generation’ field, enter –7576250848143515573