Great location, you can reach the historical city center on foot; easy check-in process and clear guidance from the host; the apartment is stocked with all the necessary utilities; responsive host.
There were a few drawbacks that could be improved - the wifi connection was slow; the main room of the studio lacked ventilation even with the windows open and small ventilator working on maximum power (that was during the hot +30 summer days in Vienna).
Otherwise, great stay!