Great location & service But Holiday Inn-like Room, Floor, Lobby & Dining
Ok, the location is amazing a few blocks from the Transamerica building as well as the Embarcadero and Market. The service is amazing especially the breakfast restaurant host and server Joseph Paras who is 100% accommodating and nice. Too bad he can't do something about the poor quality institutional food served (e.g. the bread is mediocre in a city KNOWN for its bread especially sour dough of which there is none for breakfast at the buffet). Next the Conceirge Joel Stevens is polished, 100% accommodating and kind. 
THE WORST PART IS: the scene once the elevator opens to your floor, you see a hallway like a hotel out of a 1960's movie or tv show that smells stale (like old sweaty socks) and looks dilapidated. The rooms are more modernized yet devoid of what you would expect from the pioneer of business travel--Hilton. They charge you $3.00 for a bottle of plain water (that you can get across the street at the convenience store for $1. There were also worn marks over the carpet and furniture. It was shabby. 
Would I stay again at the Hilton in San Francisco? No. Would I ever stay at a Hilton anywhere? No.