About the street noise
I wondered why, given that this is a fairly modern building....a close look at the windows tells the story. The hotel's rooms nearly all have 3 panel bay-type windows that jut out from the facade of the building.  Provides great views, but the windows seem to be single pane, sealed units, not the double (sometimes triple) pane glass used in many downtown hotels.  So,yes, street noise comes right into your room, even at high floors. 
Too bad, because this is an ok hotel otherwise with some good deals on rooms at times.  Service is fine, Very central location, convenient to BART....just darn noisy!  BTW, we did not experience much interior noise. Doors to rooms closed fairly gently, not the prison block slams you find in some hotels.  Wall and ceiling noise was average.
The earplugs supplied along with the shampoo are not just for decoration though