It's taken a while -- OK, too long -- but the luxury health club phenomenon is creeping further into Boston with the arrival of this chain of fitness clubs that look more like boutique hotels than the poorly-lit interiors of the Gold's Gyms that we've all been enduring with for years. It smells better than Gold's, too. The juice bar, the spa, and the power yoga are make this our favorite new spot to workout, and, yes, lollygag.