As intimate and hip as your coolest friend's apartment, G Spa features a hangout room with white couches, chartreuse-splashed walls and five funky treatment "pods." If you have at least six guests recieving two treatments each, there's no facility charge. "We can do anything they want," says spa director Danielle Browning. "We've done elegant lunches, high teas, and sushi and martini bachelorette parties."