A large, eccentrically furnished room in a flat which you will be sharing with two other guests. It’s just beyond the big ring road, but very easy to get into town (you’re at the southern end of what appears to be the Viennese equivalent of Oxford Street).
As others have noted, this particular room is only accessible via the flat’s bathroom, which can create occasional problems unless you co-ordinate with the other guests, but that’s the only issue and it didn’t bother us too much.