Corinna’s Place is in an amazing location. Hip neighborhood right near the Volkstheater. It was perfect and easy to get too using the subways/trams (which are great in Vienna). She was super helpful with tips for events around the city and checking in.
The place is fine for 4 people with 2 sleeping on the pull out couch in the living room and the other 2 in the bedroom. Apartment was great as a base of operations for Vienna and most of the museums were within a 10 min walk. The apartment was a little dated but very typical for most European apartments. Only inconvenience was the lack of an elevator for a 3rd Floor (4 flights of stairs).