I recently saw a post from someone here that severely criticized this hotel. Unfortunately, the comments were suspended so I could not respond, but I did want to say that I stayed at this hotel, and absolutely loved it. The hotel was very conveniently located, the building interior was quite beautiful and the staff could not have been more helpful and friendly. In fact, I was so pleased with the service that I spent time saying goodbye to the staff members I had contact with on my last morning there.
I am not trying to negate the previous poster's comments but I am posting this here so that people looking for hotels in Vienna are aware that travelers can have varying experiences and one bad experience should not define a good hotel.