Milena is a great host and has a wonderful apartment.
We stayed at Milena's apartment during Dec for 4 nights and had a fantastic time. Milena met us at the apartment on arrival and gave a full tour and explanation of everything in the apartment. The apartment is spotlessly clean, well appointed and perfect for a city break getaway. Temperatures in Vienna were around 2-6 C whilst we were there but the apartment was lovely and warm. It is situated about 10 minutes walk from the Parliament building and Rathaus, so is easy to walk into the centre of Vienna, although there is a tram you can catch which that has a stop about 50 yards away.
Overall highly recommended.