I came to Chicago for my work and Teo's apartment was an absolutely excellent alternative to staying in the nearby Sofitel or W Hotel, both of which are absurdly expensive and not nearly as comfortable as staying in Teo's cozy apartment. We also had a really good time chatting about a wide range of topics - Teo's a really interesting, intellectual person. My only regret is that I could not stay at his place longer. Finally, I highly recommend following his advice and take the subway from O'Hare to State/Lake station (downtown), and then take a taxi for the last leg of the trip; taxi ride cost about $5 and took about 10 minutes.