First: this place was well appointed, the photos were accurate, and the apartment had everything i needed. The location is great, too. Close to Paulina station, but almost zero train noise. And there's night life, shopping and grocery very, very close.
Cons: another reviewer mentioned it: the lockbox entry process is a hassle. I was constantly coming and going, and having to use a shared key in the lockbox was very tedious. Not to mention after dark was cumbersome.
Pros: the listing said there was no air-con... I arrived on the hottest day of the year (so far) and pleasantly found two a/c units regulating the condo temperature. So that was an excellent touch by the hosts. Never saw the hosts, but they were communicative and thorough without being bothersome.
Also, if you crawl through a city like I do, the third floor gets to be a drag.
At the end of the day it's nice to be perched high atop the streets of Chicago. Lockbox and creaky staircase aside, the place was well appointed and the hosts easy to communicate with. I'd stay at their property again.