The location is excellent with, which is just 110m to a big supermarket and around 200m to a MRT station as well as a bus stop. Also some restaurants around within walking distance. Very convenient for almost everything. Ingela is also very nice, friendly and helpful. The best thing was that she has provided two local cellphone (for free) for us to communicate with our group members.
It is highly recommended to book Ingela's apartment if you visit Vienna with a group of 5-7 persons.