ゲゲストHarry's Home Wein Millennium Tower was a nice hotel stay for me. The location was good, next to the Danube river and right above a shopping mall. Also, was only a 3 minute walk to the metro train into the city center (or other places in Vienna).
The front desk young woman was extremely nice and helpful. The hotel, and my room were clean and spacious. Several big windows had a nice view out. I did not eat the hotel breakfast due to my personal time schedule, but there is a large grocery store directly below the hotel that is open from 7:40 am until 8 pm that was good. Also, right outside the hotel entrance/exit you can take the skywalk in the mall across to the mall foodcourt with several options.
I felt the hotel was a good value for the money, and much cheaper than staying in the city center of Vienna. I was able to take the metro and tram into that area in about 25 minutes or so. Overall, I was pleased with the staff, the location, my room, etc and I would stay there again if I am back in Vienna.