I'm not sure why the moderators removed my post, but I'm reposting it as I think it provides good information:
The Westin Galleria only has one suite per floor - it is a nicer suite with full separation and a larger bathroom with massive shower. I would get upgraded sometimes during COVID, but not always as these rooms go fast. However, the Westin Oaks has four suites per floor - I was upgraded there even as a Silver during COVID. The catch is that these rooms are long with a living room in front and bedroom at the end. They are the same as the Executive rooms, but the suites add a sliding door. Both properties are connected physically to the Galleria and have free self parking in the attached Galleria parking garages (you mix in with mall patrons).