The friends and family members of the 315 athletes representing Canada at the Olympics are welcome, as are those of the coaches, sponsors and Canadian Olympic Committee delegates.
Its other function is to facilitate business meetings and private functions for the Olympic committee and other Canadian sports federations, according to the COC's website.
The building was there before and remodeled for the Games, according to the CBC's David Common who toured it on Thursday. (He gives a sneak peak of the uniforms athletes will wear to the opening ceremony, too.)
It's located across from the rowing venue near Copacabana and Ipanema beaches. There is a public skate park across the street.
Access is by pre-registration only and visitors are required to sign-up online before being let in. That means a Canadian passport alone won't get visitors past security.
It's filled with picnic tables, Muskoka lounge chairs, hammocks and other touches the space's designers say lend to its relaxed ambiance.
Toronto and New York-based firm Yabu Pushelberg was tapped for the layout and design work while artists from Moss & Lam studios (also from Toronto) crafted the house's artwork, including the paddles hanging over the spiral staircase.
In an interview with the CBC's Heather Hiscox, who also visited Thursday, George Yabu said he and his partner, Glenn Pushelberg, went for "simple icons like oars" (referring to the before-mentioned paddles) to express the "ironic wryness" at the core of their design.
The interior design incorporates references' to the building's corporate sponsors which include the Hudson's Bay Co. and the Molson Coors Brewing Company.
There is also a Canadian Tire logo behind the shelves in the pantry room, where visitors can grab a snack.
Canadian tennis player Eugenie Bouchard also stopped by (and had this to say on Instagram.)