In this seed, you will spawn near an island with a village and a mansion next to each other. In fact, it is located inside the settlement. You will find them at coordinates -460 ~ 180. Also next to the mansion in village, at -397 37 113, is the half-submerged Nether portal.
How to use Mansion in Village on Island seed
Start the Singleplayer mode
Select ‘Create New World’
Then click on ‘More World Options…’
In the ‘Seed for the World generation’ field, enter -368637617