We had a full paid reservation, about 1 mounth ago. With 24h before we leave our home, we try to get in touch with Katarina, she didn't answer to our messages. When we arrive in Vienna, we try to call Katarina..like..more then 30 times, with no answer( like she said, we should let her know with 60 min before we arrive). We know that from airport to her house you will make 1.2h so all this time we countinue to call her, also our friends and assistent from airbnb try to call her, but she didn't answer. We wait outside her home till we froze, it was like 23:00. Well, everybody see that Katarina disappeared,so we get a refund and we start looking for a place to sleep at 23:00. I hope nobody receive the same treatment like us, but always be carreful.