In this seed, you'll spawn in a mesa biome very close to the ocean. To the northeast lies roofed forest with a woodland mansion at coordinates 600, -650.
There is a hidden chest in the attic at coordinates 610, 90, -610 holding an Enchanted Book -- Protection I.
Another chest can be found one storey below at coordinates 610, 80, -610 that holds a diamond chestplate (+10 armor).
Lastly, the third chest can be located at coordinates 635, 66, -625. This one keeps a golden apple inside.