I definitely recommend staying in Marijan's flat. Its main advantage is close location to all main sightseeing places in Vienna, everything is easily reached by foot, however the underground station is also within 5 minutes walk. We stayed there as a family of 2 adults and 2 children, one of them in a baby stroller, and this should be kept in mind as there are steps to climb to the flat. There is a supermarket across the road. The flat is very warm, the kitchen has everything that might be needed. There are enough space for everybody, the flat's layout is quite successful. It is absolutely worth its price. The host was very sociable and extremely helpful. Thanks for the accomodation!