This is definitely one of the best apartments I have stayed in Paris.
The place is very stylish (beautiful paintings, among other things) and central. The room is spacious, and you can have complete privacy.
What made a huge difference, however, is Gerda’s and her husband’s hospitality. Absolutely great hosts. They made me feel at home! I highly recommend Gerda’s place. Hospitable, chic and Parisian ;)