Top flat in old historical building I loved. Top location in the heart of the old town of Vienna. Top host because Rainer was always available if required. One single point for improvement: WLAN connection quality in the room was poor all 3 nights I stood there, even a challenge for replicating emails only. So, in case you should need continuous WLAN connection (as I do as digital worker) de facto around the clock, you might look for an alternative host.