We had a great stay.
This place is a well renovated mid century apartment which located in Vienna area 3 and is very close to many attractions. It is also close to tram station, bus station as well a few good restaurants (we tried Grado Pizzeria and Loculus). The place is very clean and well equipped. There is no AC. We had a couple very hot days (in Viennese scale) but the provided fans were adequate to keep the indoor area cool.
I definitely recommend this place and will happily come back here for our next visit.