Recently stayed at this Marriott during the very busy season of Winter carnival. You wouldn't know it though. The staff was very accommodating and couldn't have been more friendly. This isn't a typical Marriott though. Remember you are in Old Quebec It feels very old world. Stone walls, small halls but still nice.
The room was average though I do wish it had an in room safe. The front desk was nice enough to issue me one for my valuables in their office.
We had breakfast at the hotel each morning. It was a buffet with eggs made to order and very reasonable for Quebec. $15 adult, $7.50 for 12 and under. This hotel is a great location for getting around the city as well as easily walking to the Plaines de Abraham for winter carnival.
We will be back.