The Chancellor is in a good location (easy to get around SF and felt safe). It is a charming older building, with a lovely lobby (cookies, coffee, water, apples) and nice staff.
That being said it IS an older building making it not so sound proof. Our room had a door to make an adjoining room, which was not sound proofed at all. Also, in our room the mattress was super soft. Usually mattresses aren't an issue for me, but this was a little too squishy to sleep comfortably for me.
The room size was decent and very clean.