We stayed at Justina's for 4 nights. The flat is beautiful and very well located; is 5 minutes by walk to Uban and is also perfectly linked to the rest of the city with bus/tram service. Is perfect for a couple; the bed is really comfortable, the kitchen has everything you need and the bathroom is very clean - actually all the house is very clean. Justina was very kind letting us check out in a more comfortable time; she is a careful host, a great communicator and she gave us a lot of tips and advices about Vienna. I would totally recommend!