It was nice stay at Dominik's apartment. He was flexible with check in and replied fast. He was very helping and allowed me to wash my clothes. The apartment is shared by other travellers like us. It's on the 2 or 3rd floor without lift. Walking from ground floor to the apartment was a bit surprising since it was an old building. But the apartment where we stay was kept well maintained. The place is easily accessible from center in 15-20 minutes. It was really value for the price. I will surely choose the same place if I visit Vienna again. Thanks you Dominik.