We really enjoyed our stay at Andrew's. The place is located near U-bahn and different means of transport but we only used it to get to Schonbrunn, because the walk to Museums Quarter, Belveder, Albertina or Vienna Hauptbahnhoff is very nice and allows you to get to know the city. The apartment itself is beautiful, with high ceilings and wooden floors, the bathroom is clean and kitchen well-equipped. While we didn't have a chance to talk with Andy a lot, the times we have interacted gave us good energy. 10/10, we totally recommend it :)