This flat is perfect, whether you are travelling solo (like myself) or if you are travelling with a group. The flat is clean and spacious and provides so many amenities that I didn't end up using many of them (laundry machine, full kitchen). The flat is located on the 5th floor but there is an elevator so no worries about climbing stairs. It's two blocks from Naschmarkt, which is convenient for cheap food and drinks.
I plan to visit Wien again and hope to reserve this flat. Danke!