Most hotels in Canada and the United States are quite mediocre because of labor costs. You only get better service in Mexico and Caribbean countries because labor costs are lower and hotels can afford to have additional staffing levels thereby providing services (like turndown) that are illusive at all but the best hotels here.

Moreover, brands mean less here because Marriott views having 30 or whatever brands as a way to get more money from its real customers, the owners, as opposed to segregating the best hotels to certain brands that offer higher degrees of service and luxury. Having a J.W. Marriott in Des Moines or wherever just means it's another property that contributes to Marriott's bottom line. With some exceptions, Marriott generally can't have three Marriott hotels in a city, but they can have a Marriott, Sheraton and J.W. Marriott within blocks of each other.