Staying at Robert's apartment was one of the better Airbnb experiences I've had. The space is very large and open with beautiful light. Furniture is sparse which adds to the volume of the space. It's located reasonably close to a lot of interesting shops and restaurants and the metro system in Vienna is excellent so getting around the city is quite easy. We parked our car at the park and ride at Ottakring which is quite cheap and used the metro or walked for the duration of our stay. There's no air conditioning or fans but we didn't find the place unbearable even in July. Would love to stay here again some day!