Harry was very helpful, providing us with all the necessary details for our stay welcoming us at a very late hour(2 am). Considering all the nice reviews on his page I did not appreciate a racist comment about Romania in the short conversation we had.He actually said "This is a safe area, not Romania". I am sure that it was meant as a joke but I would not use that kind of humour with strangers.
Parking is extremely expensive in the area.We paid around 40euros/day for car parking.Parking is only free after 10:00 pm until 9:00 am which makes it inconvenient from this point of view.
The area seemed very safe to leave your car parked overnight(provided that you do find a parking space close to the apartment).
Also, I really hated the fact that at 8 am there was a terrible noise comming from upstairs(like someone was dragging something really heavy) and smell of fire wood smoke, combined with lots of light from the window on the left which has no blind and the noise from the metro on the other side of the street.
This apartment is good value for the money you pay. Considering that we had to pay so much for parking I would not recommend it to someone travelling to Viena by care but definately a good choice for those without a car because it is safe and very close to the city center.