That is a new resort from what I understand? I never heard of it, but I love Palace resorts. I am booking the Palace Xpu Ha on my next trip. Which Iberostar are you looking at? there are quit a few of them. I am staying at my first Iberostar in a few weeks, so I am looking forward to something new and different.
I stayed at the Aventura Spa Palace Nov 2009. Beautiful grounds, good staff and great rooms. The food and Mexican wines in the restaurants were really good. Take a day at the Spa, the facilities are excellent.