We stayed in a duo studio last month. We loved the tower and Wailulu Bar & Grill. The room was gorgeous and had plenty of storage, much roomier than the tower studios. The food at Wailulu was really good and we liked sitting outside in the covered area. We didn’t like having to go to the GCH for breakfast, it was incredibly chaotic absorbing all the additional guests from the tower.
DH doesn’t really care for the long houses but he did like the tower and would stay there again although not for an entire trip because of the crowds.