Tthat bit after the box int spawn, where the hole in the ground is, not the slide the next one where you can see the other box spawn in the building on the other side.
That bits good for two players, possibly more using both floors. I use that area to grab my galvaknuckles money/points.
don't see what difference the platform you're on makes? the map is the same on all three. well I assume its the same on 360 but I spose who knows, the way things are with this game and the poobox, they probably got sparkly bits everywhere and polished perk machines.