The Anaheim Marriott is a wonderful place.
They recently redid their lobby area to have more seating for breakfast.
The Hilton has a nice dinner buffet (not open on Sunday). In fact, I would say that the Hilton buffet is better than the Marriott buffet, meal for meal.
the concierge lounge is nice, often crowded, and the food served is good and plentiful. If they run out of food in the lounge they order more (Renaissance Madison in seattle, take note).
You will like this property.
A few years ago, we tried to get in and couldn't and wound up staying nearby at the Town Place Suites. Blech