It should be made clear that the apartment that Carol is renting is the upper level of a townhouse/rowhouse with no closed off entry to the downstairs level. The ad specified that there was a shared entry way, but this really implies that you have the same front door as another tenant but you will occupy completely separate spaces.
The day of our arrival, Carol informed us that she had a border living in her basement and that it was important that we not lock the garage door so he could use the bathroom on the ground floor. We felt that this was unfair because the space had been listed as an "entire space" listing implying that we would have the entire unit to ourselves. The border who was there during our stay came in and out (maybe 2am?) and was busy doing something (maybe laundry) on the first floor where we could hear him throughout the night one night. He did not speak English and we could not communicate with him. Despite Carol's assurances that he was a member of her church and a very religious man, we were not comfortable with this arrangement.
Although Carol was friendly throughout our communications and the upper floor was accurately described in the listing, we were dissatisfied with our stay. We felt that we booked one thing based on her ad and we got something else. It was also difficult to receive notice of this the day we were arriving, as we couldn't make alternative arrangements.