Not a 5 Star Property
I thought the site of the Hotel was not optimum, seeming to be in a sleezier part of SFO. We were bombarded by pan handlers on the street. Hilton calls this property "Hilton on Union Square" It is not. It's four blocks from Union Square. The cafe, Urban Tavern was very hard surface, and uninviting. While the breakfast was exceptional, we spent no other time there.
My wife and I stay at 5 star hotels, and I am a Hhonors Diamond. We expected this to be in that category. It wasn't. The room in Tower 1 4272 was nice, but a very ordinary hotel room. No robe available in the room, which is a mistake.
Despite the Front Desk accommodations to our needs, I feel this is not a property that we will return to, despite being a HHonors Diamond.