When you start up this seed, you will discover it is one of the flattest seeds you've come across. You spawn in a plains biome, and next to it is a sunflower forest. This is completely flat for about 20 blocks and then gets slightly hilly.
You spawn looking directly into a Sunflower patch.
Spawn Coordinates: approx. 214 64 0
Directly behind you, the super flat area begins.
Just turn around, and you will see a huge flat expanse pan out in front of you.