While I was staying at the Aventura Spa Palace in November, we did the Zip Line excursion which stopped at Playacar Palace to pick up a couple that was honeymooning there. We asked them how they liked staying there. From what I gather, they really liked it. It is smaller than most of the Palace resorts which means less restaurant options but they liked the smallness and felt like they got more attention.
What I really liked about it, is that located in Playa del Carmen so if you want to leave the resort and experience some authentic Mexican culture, it is all right there within walking distance. The resorts are nice but to me there is a vanilla type of a feel and nothing truly authentic. We are considering Playacar Palace for our mini-honeymoon after our wedding. Also compared to ASP, Playacar has a real beach I believe. Everything from the outside looked nice too.
This was back in November so I don't know when the Wyndham merger happened so it could be changed since then.