Facing the noisy street is noisy
Was on the side facing the street on the 5th floor. There is an AC unit in the window an no seal to the outside due to a 1 inch gap between window panes. The result was lots of noise from the street which still had plenty of honking and cars / trucks driving by at midnight.
I didn't see any other reviews about noise, so many this is just to be expected in San Fransisco, but I did think that this room was particularly bad at blocking sound, I was traveling for business so that is really all I wanted from my stay hence the 2 star review, other things were ok, but it just didn't matter.