We enjoyed our stay very much.
The apartment was comfortable, super clean and quiet, even the room facing the street.
Don't be afraid of having curtain in the shower - the bathroom is spacious and very comfortable.
The place is well communicated with the centre- it took us about 25 min to get everywhere we wanted by trams and underground ( metro).
If you come by car as we did I can recommend a P&R parking at Ottakring -3,60 Eu for 24 hours. There are also longer options.
We waited in a queue at the entrace in the morning for an hour but it was worth it.
At night you can park in the street for free but in the morning you have to move your car.
Billa supermarket is just across the street. And so is the tram.