Our stay at Katalin's apartment was really good. The location was nearby a big shopping street and was around a 20-minute walk to the Hofburg and other bigger sights. If you are not really into walking, there was also a subway station nearby. One downside for us was that the apartment was located next to a loud street and that it was a bit noisy. Each morning, we were woken up by a lot of noise from outside which was a bit annoying. The apartment is also smaller than it looks in the pictures. This might be something to take into account. We were fine with being in the apartment for a while, but you do not have a lot of space to for example store the luggage or other things. However, we really enjoyed our stay at the apartment and would definitely recommend the apartment if you are looking for something simple, cheap and nearby the centre.