Corianna's place is a wonderful place to stay. It's walking distance (15 mins) to Wien HBF and 30 mins walk to downtown (Uber takes 6 euros or something). We checked-in after 9PM and had to pay for late check-in (something we hadn't noticed on her profile). Apartment was sparkling clean. Rooms were quite big with pedestal fan (a sure advantage in summer days). Kitchen is neat, tidy and well equipped. Bathroom is little smaller but nice. Apartment is 2.5 floors above with no elevator and there's no washer in the apartment. Nearest laundromat is close to HBF (Corinna was very kind to offer using her washer though :).