Consistency is a relative term and what it does or does not mean depends upon the individual's own sense of aesthetics as well as their specific personal goals.

Bottom line is that Marriott and several other brands out there are players in the game and they & their brethren play the game well. There's never gonna be a perfect relationship nor a perfect hotel experioence each and every visit. It all comes down to the aggregate experience and how it is distilled in each customer's subjective mind. I myself like Marriott's chemistry and find that our experiences at their variety of products are sufficiently satisfying for us to stick with them. It's a choice from the several decent options that are out there.

Barry