The South Boston property is connected to the enormous Boston Convention & Exhibition Center, a magnet for men and women wearing suits and badges. Opened in June 2006, the 17-story glass-and-steel tower has already been updated to include a 25,000-square-foot exhibit hall and four in-house restaurants. (One of the latter, Sauciety, is slavishly devoted to the most au courante condiments.) Guest rooms are handsome, with a neutral palette of whites, tans, and pastels punctuated with cherry-wood furnishings; most have water or skyline views. When you're not in meetings, work out kinks at the state-of-the-art fitness center, complete with a slew of up-to-date machines, an indoor pool, and whirlpool.