This place worked great for our group of 3 adults and two teens. Amenities were very good and included washer, dishwasher, large refrigerator, Nespresso maker for coffee (with pods hurray!), hand soap at sinks, plenty of towels (not plush but typical for Europe.) Dining table seats 4 and the living area really only seats 4 comfortably, but this wasn't an issue for us as we were usually out seeing sights and dining and were only in the unit to sleep, shower & breakfast.
There are many stairs (3 large, curved flights to the 3rd floor and no lift), so keep that in mind if you have bad knees or very heavy luggage. No air conditioning was not an issue until a big heat wave came, but there is one oscillating fan that we used to help keep cool along with freezing water bottles to take in our backpacks while touring.
Uber worked great for us in Vienna, and the apartment was walking distance to plenty of bars & cafes, the bus/tram lines, and the Vienna Pass line. Quiet and safe neighborhood - no problems with any noisy neighbors or street noise. Apartment does not have a street view, looks onto a small courtyard. There is a cafe across the street that takes cash only and a grocery store not far (somewhat limited hours by American standards so check online - I think the name of the market is Billi?) Wifi was reliable and good as well.
Check in/out was easy. Thanks Dessi!