First of all, Arun was really very welcoming and accommodating of our needs. He was very quick to reply both before and after we got to our room. We did not have any troubles in the house: bathroom, room and kitchen were all good. Additionally, he leaves some things in the kitchen for guests to use (when we were there there were sugar, tea, coffee) that were really handy since we had just arrived from the airport. The apt is well located. We did not feel unsafe at any point and downtown was just 20 min away by bus. There are two subway stations that are at most 15 min away as well, depending on where one has to go. There are also a grocery store, a drugstore and some dining options in the area. If you need to go to United Center, I doubt there'll be any option closer.
We saw some comments about noise before we went and indeed, it is a townhouse, meaning it is very likely you might hear something from the floor above. During our stay, however, the noise was very tolerable and the people seemed to be mindful of the neighbors, so most of what we heard was during the day or early night. We did not have any problems sleeping, watching TV, etc.
Overall, Arun's place is really more than one would expect considering the price. If you want to visit downtown Chicago, or anywhere that's reachable by public transportation, it is a great option and we definitely recommend it.