Spencie, that is a good question. From the fact you that pointed out the offer was for the Tower rooms at Palace Station and have an understanding of the advantage of the Gold Coast's location (near The Rio, Palms, and a shuttle to the ctr. strip and Orleans) you already know most of what i would say about the situation.
If it were me, i think i'd give the Palace Station a try (as long as it's the Tower rooms) based on the fact that if you're staying for a week, the savings would go a long way towards a rental car.
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Ed