I had a very pleasant stay at this place! I only met Eva once, but she was in consistent communication. She was very nice and even got me more laundry pods when I needed them.
The room was very neat and had everything needed for longer stays. The fan was also a giant plus due to the heat and humidity in Vienna!
The location was incredible and close to most of the sites, including the metro if you don't feel like walking. What is amazing is that the metro is the place for multiple connections, so you don't have to change trains at all! Foodie? Excellent! The historical Naschmarkt is just down the street with plenty of good eats. There are also some good wine bars and pubs that are close too (highly recommend Lisboa lounge for wine lovers).
I highly recommend this place!