I don't mind the full-service ones in Asia where they have everything, including real suites and lounges. I mean the ones located in city centers in the US that charge basically the same rate as the full-service Marriott, but somehow have the customer service level of a generic Courtyard (or Fairfield Inn/Springhill Suites).
Why don't they train their staff to be more professional/better? Or is it still worse to work at a Courtyard in a city center than a full-service?