The seed is:
-2409661430080934605

I spawned on this island but if your not so luck the coordinates are:
X = -272
Y = -363

There are no trees so you might want give yourself a sapling with cheats...
This is great for anyone looking for a natural island surrounded by water as far as the render distance can see.
This would also be a great base/template for a survival/adventure map!
:D Enjoy