Ideally located in the Back Bay, a new Mandarin Oriental hotel will combine accommodations and gracious service when it opens in October 2008.  On Boylston St., near the shops of Newbury St., the Boston Common and the South End, Mandarin Oriental, Boston will be at the heart of the city. Mandarin Oriental, Boston's 148 guestrooms, including 12 suites, will provide spacious accommodations. Beautifully designed with custom furnishings, anegre wood and silk, each room features airy, granite bathrooms with separate soaking tubs and showers, as well as the latest in-room entertainment technology, with wireless Internet access.  The hotel will be a stylish setting for the latest addition to Boston's culinary landscape with its signature restaurant, Asana.  To nurture the mind, body and spirit, the 16,000 s/f Spa at Mandarin Oriental, Boston will offer holistic treatments blending Eastern traditions with modern techniques from its nine private treatment rooms The design aesthetic of Mandarin Oriental, Boston is the creation of interior designer Frank Nicholson.