Pia's place is in a great location. It is not where all the tourist places are, which is great when you want to see more of the life in Vienna. Pia's apartment is three blocks from the Landstraße and Wien Mitte train station. This means you can access it from the CAT train from the airport, the S Bahn, and the U Bahn trains. Do not let the location stop you from booking. You can walk to St. Stephens church or you can take the U Bahn two stops.
As for the apartment itself, the pictures are accurate. This is Pia's personal home, as has been stated in a previous review, not a rental unit. She leaves a detailed note on the wifi, maps of the area and the town, and instructions for check out. She has a great place in a great location. I did enjoy walking around the neighborhood.
I did not get to meet Pia personally as she was traveling, but my communication with her was excellent to coordinate check in. Pia, thank you for allowing us to stay at your place. We had a great time.