New, clean, well-located
This hotel was well-located; it was literally 2 minutes from Powell St Station (a major bus/subway station with on-site visitor's information center). 
The staff at Hilton were cheerful and courteous. We had an excellent room on the 16th floor of Tower 3. It was obviously recently refurbished - new carpet, furniture, tv (full sized iron+board). The bathroom was very clean and well-lit. It was a well-designed modern space for the size. Some people might take exception to the sink (compact shape), but I thought it was fine. I found the King-sized bed to be comfortable (firm).