Micky's communication prior and during our stay was really good. The apartment itself is nicer than the photos suggest. The kitchen and bathroom are small but perfectly functionable however the two double bedrooms are large and bright with all the necessities (reading lamp, wardrobe, table/desk and chairs). There were some nice added extras like a selection of espresso pods for the espresso machine and coffee for the filter coffee machine.
The location is good; not easily walkable to central Vienna or places like Stephensplatz but a very short walk through a nice park with a beautiful cathedral to the U1 (which is cheap and quick to the center). It's also very close to a Big Bus Vienna stop if you plan to take the tourist trail that way.
Our return flight wasn't until 7pm so I asked Micky if we could check-out later or leave our luggage and he very kindly offered that Mr Chang would keep it for us in a secure cupboard which was super helpful and appreciated.
Overall, we were really pleased with our stay and it was excellent value for what we paid!