We really loved the apartment, very stylish and huge! Edith and Stefan also left nice chocolates for us when we checked in! The rooms and spaces are very clean, it feels like checking into a very high end hotel.
The only thing to take care is on how to reach the place, if you are not taking a taxi. Might be a bit difficult with large luggage. The U bahn line is U6 and the stop is Michelbeuern-AKH. It is a short walk from this stop.
We definitely had a great time, and thank Edith and Stefan for their hospitality.