We came to prague early December and chose to stay in Katka's flat based on the previous reviews we read... And we were not let down.
The location we found to be superb, only a five to ten minute walk to the old square and the centre of prague where a lot of the action is.
The flat itself is very comfortable for two people, with everything you could need.
Katka was very welcoming, she was in touch in advance to make sure we would know how to reach the flat, and she was there to welcome us and give us some local advice on places to eat - very useful!
Overall a definite five star rating and would stay here on our next trip to prague.