Petra's apartment was great, exactly as listed. It is well-located (to the Westbanhof train station, popular shopping, cafes and restaurants, grocery stores, and still a reasonable walk into the old town core).
Everything was very clean and welcoming, and getting the keys was no problem. Especially nice was that Petra left a couple pages of notes for us - where to eat, how to work the laundry, sights, etc. That was such a nice touch! Also, communication with Petra was easy as she was very personable and quick to respond. Would absolutely recommend!