Great host for communication, lots of goods tips (especially the walking distance local restaurants) and easy check-in & check-out procedures. We would have loved to meet the host in person though... but he was very reactive to any question and was sending everyday some additional tips; a terrific host !
The apartment is nice to stay for some days with a group of 4 people.
The location is quiet and not far from the different places to visit; Uber is very cheap in Vienna as well.
We will come back!!