Great stay! I was in Chicago for a work contract so stayed in room C for three weeks. I honestly didn't notice any noise from the event space below the entire time so that was never an issue.
The room was a decent size and tastefully decorated and there was a work desk and a TV, and there was a thermostat in the room so you could regulate the temperature. I enjoyed the aesthetic of the apartment overall too, the art was fun!
A cleaner comes by almost every day so the apartment was always super clean which I also appreciated. Loved having a private ensuite bathroom as it means you don't really need to see any other guests if you don't want to. I like to cook even when I'm traveling and the kitchen equipped with all the basics. I brought my car so it was also great to have a garage that I could use freely, as I prefer not to look around for street parking - the garage can be tricky to find if you're not used to Chicago back alleys but I didn't have any issues. Free laundry machines on the same floor was a bonus.
I didn't look around the neighborhood much but I felt pretty safe going in and out.
Would recommend!