Like others pointed out, Matthew's studio is immaculately cleaned and in a terrific location for exploring the Chicago loop and hopping on the subway. Loved having access to a full kitchen and laundry setup, and even the toilet paper was high quality.
He himself is easy to contact, and I found the checkout process easy even though I have little AirBnB experience.
With everything, I don't hesitate to give 5 stars. I was tempted to knock off a fraction of a star for the lack of a shower liner and needing to tighten the toilet seat/replace the cartridge in the shower handle, but these things are relatively minor and didn't impact my stay.
Would totally stay again!