Me and my ( now ) husband planned our wedding ceremony in Hotel Costa Brava in Platja d'Aro and ourselves and all of our guests stayed one full week in Hapimag Mas Nou. They knew about the wedding and we had our wedding diner at the resort.
They were very willing to organize other private events as a BBQ with all the guests for a reasonable price, all the guests stayed in the same building and we got one of the apartments with the nicest view.
Overall a very nice stay!
Would def go back there again ( this was the 3rd visit )