This is the best location you can possibly ask for. Walking distance to many of Vienna's main attractions, also restaurants and shops at your doorstep. Very spacious apartment and full of light. Minor issues: the bedrooms don't get too dark (bring a sleeping mask) and there is some noise from the shops downstairs in the morning (not super noise, though). I do recommend this apartment 100% because of the combination of location and space. It was perfect for our family of 4 adults.