We had a wonderful time at Sandra's place. We traveled to Paris with family, 4 adults and 2 young children, and it was a wonderful location to base out of right in the heart of San Germain. Walkable to great shopping, cafes, sites, etc. The Metro stop was also right outside the door and easy to get around to further points in the city. You can hear the metro rumble underneath the apartment, but we hardly noticed it after long days traipsing around the city.
Sandra was very helpful before and during our stay. It is a beautiful apartment with an elevator to it. We would rent again from her next time we come.