~3.5km for St. Regis to Punta Mita.
~15km for W to Punta Mita.
The location of the hotel is here:
https://www.google.com/maps/place/20.7517,-105.4326
Based on the news releases, it will feature 120 oceanfront villas, so the above map pin is likely the entrance/main building for the resort and the property extends all the way to the beach/ocean.