SC Marriott is pretty good option, but from what I remember all rooms are basically the same size at SC Marriott, and no suites except for maybe like one "presidential" suite, so if you are really counting on an upgrade might want to look elsewhere. As a plat I've never had anything besides very similar looking rooms on one of the top floors in the "tower".

+1 on having a much better than expected pool, and I'll also add that I thought the CL staff and evening food offerings were some of the best I've had lately. This was important because the nice restaurant closes quite early during the week and whenever I've been there the sports bar downstairs was always comically crowded during the happy hour/dinner timeframe (think like standing-room only club atmosphere).