Dan's place was great for my family's trip to Chicago. My wife and I lived there years ago and came back to show our teenage kids and give them a taste of city life. The location is perfect, hip neighborhood, right by the blue line, easy to get to everything. Great restaurants, independent coffee shops, and stores ranging from upscale to thrift. We loved having tacos and margs on the patio at Big Star.
The train stop is a 2 minute walk and can take you to any of the downtown attractions (museums, aquarium, stadiums etc). The train noise can get a bit loud in the apartment, which didn't bother us at all, but might annoy some people.
Dan was great at communicating during out trip, he arranged for us to get in early to drop off our bags. When we first got there we couldn't get one of the ac units to work, he offered to send someone over to replace it, but we figured it out so it wasn't necessary. Bottom line this is a great home base to experience Chicago from, I will stay there again if I come back to the area.