Tony Bennett first crooned “I Left My Heart in San Francisco” in one of the lavish banquet halls of The Fairmont San Francisco. Home to four-star comfort, the city’s best Mai Tai (served in a fantastically kitsch Polynesian lounge), a fancy health club and spa, two restaurants, and the only place in the city where every cable car line meets, the historic hotel perched at the top of Nob Hill has dazzled guests, including many celebrities, with its old Hollywood elegance for a solid century.