I think the art deco section of the hotel, as the bathrooms are so much nicer. The court yard views have limited ocean views so I am sure that's why they call them courtyard views. I prefer Suite 510 or 610 as they are city view but with windows on two sides. Make sure to let them know you do not want a bathtub in your living area.
I have to post a trip report on Hotel Beaux Arts in the JW Marriott Marque in downtown Miami. The triple up grade I received made me feel like James Bond. The room, the bathroom, all the gadgets, service and food where some of the best I have had in the States. Used to think Setai had the best rooms, but the Beaux Arts blows them out of the water.