Real Resorts has three properties in PDC;
3* - Real Playa del Carmen (on 5th ave, off the beach)
4* - Gran Porto Real (on the beach at Constituyentes)
5* - The Royal (across the street from the GPR, adults only).
The Real is fairly basic, but good value; the GPR is a step up and very family-friendly; the Royal is straight luxury.
Hope that helps.