The apartment is located a few minutes walk from a metro station so you can quickly and easily get around Vienna without having to stay right in the centre. The apartment is small but perfect for 2 people, clean and well equipped. Check in and communication went smoothly. We booked the apartment last minute and during our stay requested to stay a day longer and had no problems.
Only downside is that the apartment can get quite warm inside. There is a small fan provided but it is very noisy so you might not be able to sleep with it on. Otherwise it's great value for money, I would recommend staying here.