I was working in Vienna for a month, and I got a chance to stay at Heidi's. I haven't met Heidi in person. However, our communication went pretty well. Heidi was pretty quick to response. The check-in and check-out to the apartment were smooth.
The apartment is clean and tidy and has everything necessary for living. It is quiet as well. No noise from the neighbors.
The apartment is well located close to everything including the metro station, the grocery store and the restaurants. There were at least 3 restaurants near the apartment which can be reach by walking for 5 mins or less. It is very convenient. During the public holiday when the stores are all close, I walked to the train station which is about 15 mins away to get things I need. So, it is very well connected.
Overall, it was a very great stay. I would definitely come back to stay here again.