I've stayed at Marriott Suites in Costa Mesa, Bethesda, Columbus North, and San Diego Downtown (the latter two have since been converted to other brands).

They were all true, two-room suites. The living room and bedroom were each fairly compact, but the total square footage was greater than that of a typical Marriott room. In each case, there was a TV in both rooms; the living room had a pull-out sofa; and the bathroom had two doors so it could be entered from either room.

I believe the room layout was about the same at all of them. The Marriott Suites properties were all built within the span of a few years, and then Marriott seemed to stop building new ones. That's too bad. They're great when traveling with kids, and having seperate work and sleep areas is also pleasant when travelling on business.

I know what you mean about "suites" like Amerisuites, where the room has a partial wall between the sofa and the bed. I don't like rooms like that, and calling them suites is false advertising.