The Mandarin Oriental opened in Boston in 2008 (a $300 million endeavor) and knocked our socks off. With a matchless Bay Bay address on Boylston Street and some of the most spacious standard rooms in Boston, the luxury hotel offers a luxurious home away from home. Tear yourself away from the swank amenities in your room (deep soaking tub, top-of-the-line technology, you catch my drift), and make a break for the spa. After all, it's the only Forbes Five-Star spa in the state of Massachusetts. Hot special offer: The "Extra Day Away" package spoils guests with one night of complimentary accommodation when they stay for two or more consecutive nights. Rates from $419. Valid until March 31, 2011.