Peter's and Katharina's apartment was really perfect for our journey. As was announced it's central, quiet and stylish, and it's true. We came earlier, Peter allowed to check-in immediately. He gave us a lot of important information about Vienna. We are very grateful him for that. What else.. the apartment is very close to the subway and westbahnhof and it was convenient for us. I would highly recommend this apartment! Thank you, Peter.