I just want to warn other travellers not to make reservations here if they actually want to have reservations in Chicago. Eight of my friends and I are meeting in Chicago in October to run the marathon. We were all hoping to stay together in one house or bed and breakfast, so in early April (6 months before the marathon) I reserved the Hansen house and sent the required deposit. About 3 weeks later, Fran -- the manager emailed me that- she had made a booking mistake & this house was not available for these dates, but she had another 2 apartments that could accomodate us. We agreed to switch to the apartments. Then a month later, in late May, Fran Ramer emailed me to say that she had made another mistake and none of her houses were available. In fact, she was sending back my deposit. At the time, I originally booked with Centenial houses, there were several other options, now two months later there is barely a hotel room available. Keeping our deposit for two months while she did not have availability was extremely unprofessional and could cost us the experience of running the Chicago marathon. I would be highly skeptical before depending on a reservation at the Centenial houses.