This is a great flat for exploring Vienna. Nice neighbourhood, easy walk to trains, trams, and buses. We had no problem getting to the flat from the airport or heading off to the bus station. There's a Lidl a short walk away and a nice Viennese coffee house less than 2 minutes walking from the flat (give Heinrich a hello for me, if you go). The amenities are exactly as described and my friend and I had a comfortable stay. In fact, we were so comfortable we were about 10 minutes late checking out (sorry again Pia!).
One thing to note is that the toilet/shower has an open ceiling, so it can make for some interesting learning about your travel companion, especially if you're traveling with a friend instead of a partner. This wasn't an issue for us, but we did think it could be uncomfortable for some people.
Overall, I highly recommend this place for you and a friend/partner.