LIVING ON THE BAYENLIGHTED HEART OF SOMA South of Market is a mostly upscale section of the city just south of the Financial DistrictSoMa is a swath of prime real estatestretching from the bay to Highway 101NEIGHBORHOOD SoMa is the cultural nexus of San Franciscocontaining its major museum districtseveral art galleriesand an eclectic mix of international restaurantshotelsand theaters