Hannah was out of town during my stay but I was able to contact her through the airbnb messaging if needed. Her roommate, Olivia was the one I met who gave me the keys and was available for questions if needed. I stayed during a weekend so Olivia was out most of the time doing her own thing so I was pretty much alone in the apartment. The apartment is located less than 5 minutes away from the U4 and U3 lines and about 10 minute walk to the U2 line. The room is quiet and the apartment is located in a safe area. There are a lot of good restaurants around the apartment on Mariahilfer Straße and also Naschmarkt (a little on the pricier side). Great location.