Benedict's apartment is centrally located, within walking distance of many shops, bars and restaurants. It is also on the U1 and U4 lines making access to the rest of Vienna and the airport trains really straightforward. It is surprisingly quiet for such a central location and has spectacular views across the river.
Unusually for this type of apartment in Vienna there are 2 separate bedrooms and a separate kitchen, making sharing with friends easier. However, as has already been said the shower is in the main bedroom, albeit separated from the room by a solid wall, so you do have some privacy. It might not be a great apartment to share with those you don't know well, but it was fine with a friend.
Benedict was a great host, easy to communicate with and gave us a good introduction to the local area. He has lots of thoughtful touches in the apartment and his communications.