This apartment was well located and super convenient to use. We found the bed and space to be comfortable (the portable A/C unit was very nice on the hot days/nights!). The compact dishwasher in the kitchen was very quiet. It is very close to a metro stop and within a 10 minute walk of at least two others.
The elevator is a bit small (fits 2 people without bags), and the apartment is on the 6th floor, so this is better for people who don't mind stairs (or taking turns bringing their bags up the tiny elevator). Wifi worked great!
We enjoyed strolling down to the restaurants, grocery stores, and river nearby. All the major tourist attractions seemed to be within a 20-30 minute walk or metro ride (at most!). The breakfast, lunch, and dinner dining options were numerous, and there were several grocery stores very close by.
Our favorite nearby attraction was Prater, Vienna's amusement park (free to enter; https://en.wikipedia.org/wiki/Prater). We ended up visiting it multiple times in the late afternoon/evening to eat dinner, people watch, look at the carnival games, rollercoasters and other rides, and go to the arcades. Two of the arcades in Prater had pinball machines--Top Ten had about 8 different machines, and Daytona Beach had 5.