Marriott hasn't been much public about its future property in Rio de Janeiro. On the grounds of the 2016 Olympic Park, Marriott will be managing a 408-room property devided between the brands Courtyard and Residence Inn. During the 2016 Olympic Games, it will serve for the accommodation of part of the media personnel that will be working at both the IBC and MPC.

Rendering:

http://www.danielgusmaoarq.com/#!hotel-da-mdia/c7c6

Construction (building on the far left):

http://www.riomediacenter.com.br/wp-...Dmpico-MPC.jpg

Short article mentioning the property (in Portuguese):
http://hoteliernews.com.br/noticias/...-janeiro-66935