I'm not sure if I'll find the best words for a glowing recommendation for this flat. We are family of 3, husband, mother-in-law and I stayed for 3 nights. The flat is located very near the Wien Westbahnhof and two frequent trams that pretty much crosses over to the inner ring of the city and super accessible to necessary needs - supermarkets and shops.
The flat we arrived in was super clean, it was very nicely heated (it's one of those modern houses with surrounding heating) which we were grateful for as it was very cold that day and beddings/towels were all there fresh.
The roof terrace which was what got me to book it in the first place is above roofs so you're not towered by other buildings. It was beautiful to have a hot coffee up there and enjoy the view when it wasn't too cold.
Bedrooms were clean and tidy. Also the kitchen had all the basic utensils you need if you do prepare breakfast. All the machines were easy to handle. Nothing complicated. Absolutely loved the place!