We spent wonderful 10 days over the Christmas and New Year holidays at Monika's place. The front (street) facing part of the apartment, where the kitchen, dining and living rooms are located, is very light-filled. The bedrooms are in the back of the building and very quiet, which was really important to me as I am a light sleeper. The beds were super comfortable (mattress as well as bedding) and we slept very well here.
The kitchen is well equipped, and also stocked with things like olive oil, vinegar, salt, sugar, other spices, tea, and a few other items.
The location was pretty much ideal. The Naschmarket is about 5 minutes walking time; the direct neighborhood had several great coffee places, shops, and restaurants. It's also in walking distance (15-20 minutes) to the central old town of Vienna, as well as the Neubau and Wieden districts.
Monika is a great host, and she was very responsive to a couple of messages we had sent her, even though she was traveling herself.