My friend and I stayed at Karen's for one night as we travelled from Winnipeg to Chicago. We had a one night stopover to see a concert, and honestly didn't spend much time in Karen's home, as we arrived in the evening and left early the next morning.
We did have a chance to meet Karen and our interactions were great. She's friendly and communicative. Her place was comfortable and clean. The location is also great, as it's close to downtown and situated in a great neighbourhood.
Karen was also very accommodating. A day before our trip started my partner found out that she would not be able to go on the trip. The original booking was made under her name. Karen facilitated the process of transferring the booking from one account to another. She was very easy going about it even though it was likely a bit of an annoying process.