In total Dan's apartment are as described. But I want to add a few details for next visitors.
location is good, near the railway station, tram and subway.
Dan provide accurate plan to get into the home, process was quick and easy.
It was very, very cold in apartment at first, but heating system is clear to understand and quickly heat the apartment.
Surprise for me was absence of free WiFi. When I asked Dan he provided host WiFi from hall, but not stable and only near the entrance door. I checked description - no WiFi was declared, all as described, I missed this fact by myself. I can provide little life-hack if still no WiFi in further - there is perfect cafe right under the windows dingelstedtgasse,3 with free WiFi, so we used this WiFi after visiting this cafe.
Next morning we discovered that teapot is absent. It was disappointing, sorry.
Vienna is amazing city, and weather was beautiful, so we only sleep into the home, but if rain or snow - TV is absent, maybe it important for you.
Finally, I repeat, all was as described, Vienna is amazing, Dan is hospitable with quick response.