We were there last year with our three teens 19, 17, 15. The rooms was certainly large enough and the balcony/patio definately helped.
We were in Hawaii so we had the sink in with the facilities, but I think some of the new buildings over toward the transportation center have rooms with the sink outside. That would definately help. I know the information is somewhere, maybe FAQ.
I think next time five of us go, I will go back to two connecting rooms at less expensive resort. We have done it in the past since the kids got older and it was hard to give up the extra bathroom, but it was the only way we could try conceirge.