The three of us spent several days at Chris's apartment. This apartment has a living room, a small kitchen, a bedroom and a bathroom with a hall connecting. Two can sleep in the bedroom and beyond that, if you need 3 or more, you will lose a good chunk of the living room to the air mattress. This was not an issue for the three of us.
The exterior walls of the apartment are entirely windows, so there is a lot of light in the living room and bedroom. The shades are not room darkening however, so if you like a really dark room to sleep in (as I do), then you should bring a sleeping mask to cover your eyes. Noise was not an issue, just a very rare fire truck now and again.
The hosts were great and supplied us with snacks, water and pop. They were also very responsive to our suggestions and issues. The neighborhood seems to be mostly African-american and Asian and we felt completely safe. As others have said, it's a short walk to McCormick place and a $9 uberX trip into Chicago. I would definitely stay here again. Thanks Chris and Romeo.