We did not meet Markus or Pia but communication was by email was always prompt! We were able to check in early and rest after a long flight from Canada. Apartment, from outside and halls, lacks charm BUT is spotless inside and very comfortable. Location wonderful..great cafes near by (do check out cafe at the bookstore) , good Mexican restaurant 2 minutes away, Gourmet Spar and nice 20 minute walk across Danube to Stephsanplatz. Would recommend!