The big apartment was exactly what we needed for our big group of 6 adults and 4 kids. We had lots of space to stay in and it was close to the public transportation so that you can easily reach all the main attractions in Vienna. Generally the apartment was clean, with the exception of curtains that needed a bit of washing. Check in/out is easily done at the reception that is next door. Billa supermarket is 2 min away from the apartment and a street full of places to eat & drink 5-10 min walk. A small park for children is just near the metro exit. Towels can be taken against a deposit, but we preferred to bring our own towels. There is hairdryer and toiletries provided.
On the improvement area, communication could be improved. We made the reservation well in advance and requested whether a different fee is applicable for the kids. We received the answer only a couple of days before the holiday that we need to upgrade to 10 guests, no special fee for the kids. It would have been useful to know way in advance. Additionally, we needed a bed-sheet change for one of the beds; we were told at reception that this is doable against a fee, however nobody came in the end to change the sheets. So for me the communication with the guest was more commercial and inefficient compared with other places I booked using Airbnb.