We love the Portofino. Actually, we just got back last night from our 6th stay there. It's great staying there with the kids (preferably in a Kids Suite), but my husband and I also like going by ourselves. We just enjoy the hotel as a stand-alone resort. He doesn't even go into the parks.
Our favorite thing to do is to rent a cabana at the Villa Pool. It is very quiet and relaxing, elegant and adult. The cabana rental includes a nice bowl of fresh fruit, sodas in your cabana's mini-fridge, ice, and pool floats. Some cabanas have a TV.
All in all, the hotel is really hitting its stride. The property has always looked like a Four Seasons or Ritz-Carlton, and now the service matches that expectation. Every time we've gone there has been a nice surprise improvement. I loved having the Sunday NY Times outside my door when I woke up!
My favorite part of the Portofino? The sheets!