Absolutely wonderful flat in Vienna. We have very much enjoyed our week in this apartment as family of 3. You will find everything you need even for a longer stay - dishwasher, washing machine. If you are into aluminum capsule coffee, you will find a Nespresso machine - we used the regular Espresso cooker. The separate dining table is good for 4, the couch 3-4. The TV is big enough with cable TV - if needed you can plug your fire TV stick into the extra HDMI port and use the wifi. There is enough room to stow your luggage. Bed is very comfortable.
The apartment is located next to tramline U4 between Naschmarkt/Karlsplatz (1 Station), Vienna Center (2 Stations) or Wien Mitte, where the CityAirportTrain arrives (4 Stations) and Schönbrunn Castle in the other direction (4 Stations). So excellent connection when arriving and departing but also for all the relevant sightseeings in Vienna. Busses are also available nearby to visit all the other nice areas or to go to/from the new main station. Yes, you can hear and sometimes feel the U4 driving by but at night it ceases operations anyway. For us, this was not an issue. And yes, you can always take a walk instead of busses or tramline to many interesting quarters (Mariahilf and others)
There are several good restaurants and cafes nearby. Try the Gregor's for excellent cake and try to reserve a table in Woracziczky for excellent food in the evening - you might also want to go for a decently priced lunch menu!
All in all, a wonderful place to visit and stroll the city. Happy to have found this place and will go again.
P.S. Another pro is that the toilet is separated from the bathroom (I read somewhere in the reviews that another client disliked this). With more than one person being in the flat, I consider this a pro :-)