We did not meet Gisella upon our arrival at the apartment but a very friendly lady showed us around and gave us our keys. We received very clear instructions about the facilities and wifi connection from her, as well as additional information about the building.
The apartment, located on the third floor is exactly as the pictures show: it is very clean, bright and has everything you could wish for. The kitchen has all appliances you could possibly need and plenty of cups, dishes and pans. The location is a quiet street with a nice view on Augarten and a supermarket very close by. From the apartment public transport facilities such as the metro, tram and bus are at a walking distance.
We will most definitely be back and also would heartily recommend the apartment and Gisella as a host to anyone traveling to Vienna.