Karen's place is in such a lovely location beside Powderhorn Park. It's centrally located so that it doesn't take you more than 30 minutes (via car) to get to St. Paul and even shorter for any other part of Minneapolis. My partner and I didn't even bother renting a car because of the location; just took ride-shares, or the bike options around (love the Midtown Greenway!).
The flat itself is super cozy on the upper level of a small apartment building. The floors are quite squeaky which was only a problem for us if one was asleep while the other was moving around. The other building units were also very quiet in the time we were there.
Karen is a great host and was very communicative to any of my issues, usually within the hour. Would totally come back!