We stayed at the St. Antoine in Quebec City, which was tremendous, so perhaps we were just a little expectant in what we would find, particularly after the glowing reviews here. The lobby is impressive, the wine was a nice touch and the cheese good, but the bread (aka cracker) was a little odd -- tough and very brown. The croissants at breakfast were truly some of the best we'd ever tried, which is a positive. What is odd is after such an up-to-date lobby (hip, almost, in black and fine furnishings), that the room was so dumpy. Our room (505) was large, but the bed was very worn -- flat matress, poly/cotton sheets and none of the plumpness or fluff you expect in high quality hotels -- the comforter was a standard issue floral print, with no charm. That led to an otherwise dreary appearance to the room -- done in simple whites with upgraded bedding and we'd have changed our opinion. The brouchure in the room appeared to have some updated rooms, so perhaps we just got a bad one...either way, it was a disappointment. And yes, the bathroom was large, with nice toiletries, but the shower was the dingy fiberglass and aluminum insert in the corner, with just a trickle of water, after you managed to work the button on the bottom, very odd. What is surprising is that this hotel is owned by the same folks as the Nelligan -- which was right around the corner and looked amazing -- and very upscale.
Old City hints: Avoid the square around the corner and the restaurants there -- very poor examples, given the options further down rue St. Paul. Great coffee/croissant place called Olive Gourmand or something on St. Paul and a great, fun steak restaurant on McGill and St. Paul, Holder or something. Very nice and not expensive.
Net: Stay at the Auberge if you like larger rooms, are on a budget and do not have high expectations -- you will do fine. If you are particular and do not mind paying a little more, do the Nelligan.