I had a great time at Karen's place. The location was great, 4 min to the metro most of the time, or 10 min if the closest station didn't work (happens during weekdays on some houres).
The place was clean, and having the private bathroom was really nice, I almost didn't feel there were other people in the place. The kitchen had everything you need for light cooking. The area felt safe and there were many supermarkets nearby.
I definitely recommend it! (: