EVEN in a culture in which sex toys are a booming business and Oprah Winfrey discusses living your best life in the bedroom, a coed live-in commune dedicated to the female orgasm hovers at the extremes. The founder of the One Taste Urban Retreat Center, Nicole Daedone, sees herself as leading “the slow-sex movement,” one that places a near-exclusive emphasis on women’s pleasure — in which love, romance and even flirtation are not required.