I stayed in Corina's place for 1 month. She met me in person and showed the apartment. Also, she provided me with the list of local bakeries and restaurant, which was handy.
The apartment is located close to the city center, but not too close to the tourist crowds. All the necessary facilities are nearby - Billa/Spar supermarkets, restaurants, metro/tram, the post office, ATMs, etc. The Danube channel is just 5-7 min walk, good for the morning jogging.
Overall, I like the place very much. The only nuisance was the noise from the trams. Not a big deal, though - closing the windows fixed it.