We had a great time on our travels! Zhi's place us exactly as advertised, very small room with a bed, a table, and a chair. Hence the low price. But when your traveling who needs anything but a room with a bed?
There are 2 bathrooms and 2 kitchen areas for the 3rd floor (where we stayed, im not sure if its the same for the 2nd floor) which you share with the whole floor.
The walls are very thin so you pretty much hear everything, which was not a problem for us but im sure others might see that as an issue. So maybe bring ear plugs if that might be a problem for you.
The beds were fairly comfortable. The bottom bunk was a softer mattress and the top bunk was very firm, so you have options.
Overall it was a steal!! I would definatly stay at this air bnb again if i find myself back in chicago! Chinatown was a great experience!