We travelled with two kid under 2 years, so to have enough space was important. The flat had two big rooms, with big beds as well, which has been quite ideal for us, for sleeping but also in terms of chilling with th kids.
The kitchen was well equipped,
The bathroom also fine.
The location is excellent not only close for the metro line by walk for like 5 minutes, but there is a big penny and a drug store nearby respectively.
I would defenitely recommend for a stay in Vienna, nevertheless with or without kids.
A hoover would have been useful within the apartment, but only becasue we went with kids, otherwise I wouldn't care.