Originally Posted by ILuvParis
Absent a stunningly low rate at another good hotel, I can't imagine any reason to stay anywhere else in Buenos Aires.
Sounds like you've had really good luck with the Sheraton! Congrats! The ONLY other possibility that springs to mind is a sojourn at the Park Tower, which while identically located is just a bit more upscale.
Did you learn the trick of using the PT's elevators and then simply getting to your room from that side?? When the Sheraton is crowded during conventions, this is a big time saver.
Best, Dave