I stayed at Mary's place while I was in Chicago taking my board exam for medical school. I didn't have a room mate, so my stay was more comfortable than I expected it to be. The room was a bit cold (I visited during the polar vortex of -20degrees) but I slept very well under the blankets and quilt provided.
The house was very clean and easy to find in an Uber. There is only 1 bathroom but if you need it for a certain time (for example, to get ready for an exam) you can sign up on the whiteboard on the door.
Powell, the house manager, was very welcoming and helpful and it was nice that he was readily available.
All in all, it was a lovely stay! I would say if you are visiting Chicago to explore the city, it's not the most ideal location. However it was perfect for what I needed.