Nina is the best host ever. We arrived late, around midnight, but she was very nice and super cool about that. She also provided fresh towels, a welcome drink, access to her rooftop terrace, and she was very friendly and chatting with us, because she was interested to get to know us. She was also very helpful to make our stay in Vienna magnificent. She gave us very helpful tips, we have really appreciated that.
We have also met her children, who were the loveliest kids ever. :)
So, we can only recommend Nina as a host. Hopefully one day we could return the favor.