The smell is what hits you. Step out of a hotel first thing in the morning and you have to step right back in; urine, feces perspiration — all at once. Last time I was there was ten years ago and I’ll never go back (and I live two hours away).
I guarantee you that filthy street hasn't been swept in a decade ... or maybe since the night before ... it's hard to tell in many places of San Francisco -- which, just 30 yers ago, was one of America's finest and spectacularly beautiful city.