It really depends upon what you mean by centrally located. There are 5 bus stops and 4 pools (main pool & 3 quiet pools) at OKW, so you're never really far from those facilities.
If you want to be near the check-in/hospitality area, you need to book that. OKW has created a Near Hospitality House booking category, it is the same number of points, and will be within an easy walk of the front desk/main pool/restaurant and boat dock. But we honestly prefer the quieter areas away from Hospitality.
The Near HH category includes bldgs 11 to 14 and 23 to 26. If you can;t get that category, but want to remain close to the area, bldgs 15, 16, 27 to 29 and 62 to 64 are good alternatives. Be aware that only bldgs 62 to 64 have elevators, and are often used for those with mobility issues.