Location, location, location!
Just a few blocks from the 'bean' (Cloud Gate), many restaurants, the Theater district, several subway (the 'el') stations - you couldn't find a better location if you're coming to discover Chicago as a tourist, or for work in the Financial district (right in the center of the Loop).
The place feels brand new, is beautifully furnished and decorated, very comfortable, spacious and exactly as pictured.
There is a doorman, and the area surrounding the building feels very safe.
Cloud9 is wonderful to interact with, they are very responsive, helpful and cordial - I highly recommend their services and would not hesitate to book any of their other units as well.