Up side: the hostess accommodating late arrival and not there first 2 days, certainly out of your hair during your stay, 5 min walk to 2 train stations, very lively neighborhood with many cafes and restaurants, fresh bread for breakfast every morning.
Down side: semi-clean apartment, bedroom windows facing busy and noisy road, noise from the upstairs apartment, hostess not into small talk, no talk at all for that matter (but this could be an up side, depending on your expectations).