Our group of three families (six adults, five children, and two babies) stayed at Maria's house for a long weekend in Chicago. It helped that many of the adults had lived in Chicago before and were familiar with the city. The location of the house is pretty great - it's in a quiet, residential area and it's not too far from stores, restaurants, Logan Square, etc. although it's not the most walkable area. The proximity to the highway is great, if you're going downtown or flying in/out of O'Hare. The house is very spacious and comfortable, reasonably well appointed, and fairly clean.
Maria was an excellent host and we really appreciated how communicative she was. I'd definitely recommend this house.