I had an enjoyable two night stay here. The location is great and although an easy walk into the centre, I made full use of Vienna's great public transport with the tram right outside and the subway just a few minutes walk away. I had no trouble with the noise from the trams or with the stairs. There was slight noise from the water heater but I was ok with that too. It was a very comfortable, clean and spacious space and the WiFi worked well. Although it is always nice to meet the host, Kiki's system of instructions, codes and keys allows for more flexibility and was very easy to follow.