The location of the apartment is 5*. You can easily explore Vienna Center by feet.
Although, the matress is not quite confortable, I had a lot of back pain in the morning (it is too soft). Then, the bathroom has 2 separate rooms : one with the toilet, the second one with shower (and this one with the shower is not a room, but an open space - which makes it a cold environment after you finish the shower) - Personally, I didnt like that! The rooms are tall (4-5 meters length) which makes them harder to heat - we were trembling a bit in the first day we arrived! Also - if you want to watch local tv/movie, you must pay for it.