This seed generates a cozy village that is partly located in a sunflower plain. If you want to see it, go after spawn to point 80 ~ 10. There is also a mansion near the village. This seed is good for start, besides, at point 260 38 237, not far from the mansion, village and sunflower plain, there is a Nether portal, right inside the mineshaft.
How to use Mansion, Village and Sunflower Plain seed
Start the Singleplayer mode
Select ‘Create New World’
Then click on ‘More World Options…’
In the ‘Seed for the World generation’ field, enter 439100963668632868