Overall wonderful experience staying at Karen's place. I'd recommend to anyone, although with the one caveat.
Pros: Karen and her husband are extremely responsive and accomodative. The place was clean and there were fresh towels waiting for me when I arrived. I liked the lock mechanism installed in the house versus the traditional lock and key - it gives you peace of mind when you don't have to worry about monitoring a new set of keys. The location is perfect if you want to be close to the University or the Hyde Park area. In addition, I needed to leave my luggage at the house after check-in because I would be on campus all day and didn't want to carry luggage around so Karen was nice enough to let me leave my stuff in the living room until I could come back to grab it.
Cons: The major con is something that neither Karen nor her husband had any control over. The main thing was the paper thin walls. Because of the location and value of this listing, there are some who book this place for weeks or months. During my stay, there were a few guests who would invite people over and would talk/watch TV pretty late into the night. I had trouble sleeping because I could hear everything, including people walking around in the house and anybody talking on the phone. Again, not something Karen could have controlled and something that could have been prepared for beforehand (bringing earplugs). But an important note to make if you are planning on coming and need to wake up early the next morning, have interviews to prepare for, etc.