Catherine's master suite is awesome. It's spacious, the bed is very comfortable and the shower and spa is amazing.
Wicker Park is a very cool suburb and was great for my first stay in Chicago. You can easily catch the train to the city to do sightseeing, and I especially loved exploring the area. I felt safe walking around at night by myself.
Catherine is a wonderful host and can help you with any questions. She provides tea/coffee and some snacks, which made my stay more comfortable.
The only thing to note for light sleepers is that the apartment is on a busy junction and next to a Pizza Hut so you do hear the traffic and the bustle of people/cars at Pizza Hut in the evenings. It would not stop me from staying at this place again or recommending it to others, but something to note.
I highly recommend a stay at Catherine's place.