Great location, not far from the Hauptbahnhof and a short walk from Pilgramgasse and the Naschmarkt. Flat was good. The only thing I'd say is that the hot water is limited. 50 litre tank in the bathroom is enough for two showers of about 2.5 minutes each. Then you have to wait for an hour and a half for the water to heat up again. You need to plan around that but otherwise good.