We arrived to the apartment on a Friday afternoon and departed early Monday morning. Caroline was a great host. Quick response and great communication. In fact, she helped us out moments after messaging her when we couldn't figure out the lock box with the key. The concept is easy, but we were just not use to them.
The apartment is in a safe quiet neighborhood. We found the apartment to be very clean. While we didn't spend much time at the apartment other than to sleep and prep, we liked having at least a fridge to store snacks, access to a washer/dryer, and the shower was wonderful - excellent water pressure. The main bed and pillows were comfy.
The apartment is very close to CTA bus 77 on Belmont if you need to get to O'Hare, which we did early Monday morning. It'll take you to the CTA Blue line station west of the apartment. CTA red, purple and brown lines are just a bus 77 or walk away. The apartment is surrounded by plenty of shops and restaurants in a very safe area. Whole Foods is a few blocks away. Overall a great place, and we would recommend and stay again.