We loved our stay at Mario’s apartment, it was just what we needed for our time in Vienna. In regards to location it was only a couple minutes walk from the nearest U-bahn which was super helpful for getting to the centre. My friend and I also felt super safe staying in the area and there was supermarkets a short walk away as well as cafes etc. The apartment was really clean and tidy for our arrival as well. We enjoyed staying here and would definitely like to return.