We stayed there in April 2013, thanks for the tip given to us by a local friend. Very nice and clean hotel, excellent customer service - from front desk to room service to maid service. Very nice restaurant "West" on the 17th floor, with panoramic view of LA and on the clear weather you can see ocean from up there. Getty Center right next to the hotel and it's on the corner of Sunset Blvd. So overall we are very happy with our selection.
As far as noise - we would agree, there some highway noise, a specialy now with widenning I-405 and almost non-stop construction. But thats the price you have to pay for being in the location with quick access to the highway. And noise didn't really bothered us. It's there but not to the point that you can't sleep or do your normal activities.