First of all, thank you Stanislava for a wonderful stay. The apartment is nicely furnished and designed. Cleanliness is very important to me, and this apartment was spotless. No complaints in regards to cleanliness. The apartment is also spacious and has lots of storage space, so I don't think it would be a problem to stay for several weeks.
The apartment is next door to a large grocery store, ATM, etc. This was very convenient as we didn't go out for breakfast. There is also a nice balcony for morning coffee. The apartment is in a safe neighborhood. There were lots of children playing nearby every afternoon, which tells me that this is a family friendly area (I stayed here with friends, and we are all in our 20s, but I'm sure that this is a nice place for families).
In terms of public transportation, the apartment is also well-located. It is just short of a 15 minute walk to Hauptbanhof, where you can take the train to/from the airport and find transportation via train/metro/bus to anywhere in Vienna. We also used electric scooters, which were easy to find nearby. There are however not many places to get dinner in the area, but we spent most of our time in Innere Stadt and closer to the city center, where we ate lunch and dinner, so that was not at all an issue for us.
Overall, we had a great experience. One thing that is worth taking notice of is that there is a late check-in fee. Our flight landed at 22:00 so we agreed to pay 10 EUR for late check-in. When our flight was delayed and we were expected to land after 23:00, we were to pay an extra 10, totaling 20 EUR. Such a late check-in appeared to be inconvenient, and the host offered to pick us up at the airport instead, for 30 EUR. Our understanding was that we would pay 30 EUR for pick-up at the airport AND late check-in. However, on the last night of our stay, I was called and asked to leave 50 EUR when we left the next day. This means that we paid 30 for pick-up and 20 for late check-in. This is fine and fair, but had we been informed that the 30 EUR we were told to pay originally, did not include both transportation and late check-in, we would have chosen a cheaper method of transportation to the apartment from the airport. Just be aware that there are extra fees, and that miscommunication can be a problem, likely because of the language barrier. This was not a problem, but it's nice to be aware!
Again, thank you!