We (my wife and I) have twice stayed in Vienna in the Katerina's appartaments. And again, every visit we plan to ask her about the rent. She is amazing. Very hospitable, polite, always ready to help. We forgot in the apartment our passports after check-out. The keys were inside. It was Sunday, 8 am. The flight within an hour. The Wait for help was only possible from Catherine. Be sure, without further explanation, she immediately came from the other side of the city and helped us. Isn't this wonderful. About the apartment I can say that this is a very cozy apartment, fully furnished, there is everything you need. Clean, comfortable, quiet. 10 steps from the subway, 10 minutes walk to the centre.