This was a fabulous apartment to stay in. And in my view you really need at least a week in Vienna. Very kind and generous hosts. Walking distance to most attractions, and walking distance to the U4 line which takes you to many places including the main centre train station.
Really spacious, clean, and well equipped apartment with a supermarket around the corner. Better still about 3 blocks to the left of the entrance door as you leave the building, on the same street, and it will be on your right, you will find Hoffer (Aldi) to Australians - fantastically cheap and a huge range for everything you may require for your stay. Going left again as you leave the building entrance, in the next block, is a new Italian café with fabulous coffee and all pastries made on the premises. Not to be missed. And best of all Johanna's quick response to all my emails from first booking the apartment, to emails sent to her during our stay.
I have no hesitations in recommending this apartment to anyone visiting Vienna, so long as it's available when I go back one day with my sister!! One more thing if you can afford the time stay at least a week and live like a local. Amazing city and amazing apartment.