Off the top of my head, I'd recommend two of my favourite places:

1. Calicoan, Samar: This is a gorgeous little resort with all the amenities needed for a group who just wants to chill by an infinity pool and unwind. You can take a plane to Tacloban from Manila and take a two hour car ride to the resort. They should be able to help with all the arrangements:
http://www.calicoansurfcamp.com/

2. Coron, Palawan: Definitely one of the most beautiful places in the Philippines. I highly recommend Club Paradise, a lovely resort on its own little white sand island. This is where I got married a year ago. :) Club Paradise can also be reached via a plane from Manila to Busuanga.
http://www.clubparadisepalawan.com/

Enjoy your trip!