Many others will say this but it needs to be said again, so people know this is a genuine review. This is an excellent location in Vienna, all the sights of the Inner Stadt are within walking distance and if you need the rest after a long day, the UBahn at Schwedenplatz is so close. Johanna was wonderful on check in telling us all we needed to know. The wifi was excellent (and needed when our accommodation from another provider in Florence fell through) and Johanna was in contact by email to finalise our checkout. There were five of us, my husband and I, two kids and my mother. We never felt cramped and the kids were fine with the sofa bed. We simply could not have afforded Vienna without an apartment and with this apartment we felt we were living like imperial royalty. The Spar supermarket around the corner was a real bonus. These hosts have really though about what guests need and they have provided a top class property. They even had a list of possible restaurants in the area.
If you are thinking about this property- book it now! Johannes and Johanna deserve to have people in their property every day of the year, they should be rewarded for the effort they make. I would fly non stop from Australia any day to spend a week here.