Well, the house is not so tiny as I was expected :) 4 person have more than enough place. Check in went very smooth and we find the house very clean. The kitchen is well equipped and spacious, but it doesn't have a cofee machine.
Location is quite ok, depending on what you need, for me was perfect, metro station is 5 minutes walking, and to the center of Wien there are 5 station (15 minutes)
Communication with the host was very easy and smooth.
I do recommend this accommodation in Wien.