If you are staying in Samoa on the first floor, you will have a patio that exits toward one pool or the other. The hallway runs from north to south with pools lying on the east and west side of the building.
There are short walkways around either end of Somoa that connect the two pool areas.
I guess I'm not sure why you'd want to walk "through" the building, but to answer your question, the entrances to Samoa are at the north and south end of the building. The north enters the path to the pools or Hawaii, the south is between Nuie and leads to GCH path or either pool.
Hope that answers your question?