Sofitel Philadelphia, Philadelphia, Pennsylvania $$$$
Concierge.com's insider take:
On the former site of the Philadelphia Stock Exchange, in the city-designated French Quarter (between Walnut and Sansom from 16th to 19th streets), the Sofitel is the best place to let loose your inner Francophile. It's also the hippest downtown hotel: La Bourse, a sophisticated bar in the granite and marble lobby, is one of the few late-night spots in Center City (open until 2 a.m). In-house restaurant Chez Colette serves up brasserie cuisine from morning till night. The 306 streamlined Art Moderne rooms have honey-colored wood paneling with ebony accents, subtle geometric-patterned carpet, oversized desks, and marble baths. Despite its size, the hotel maintains a boutique feel—mostly thanks to the staff, who can't do enough to introduce guests to the hotel's services (such as the complimentary fitness center) and clue them into the city's best shopping.