This apartment is wonderful! Absolutely our Paris dream. Super central location and yet quietly tucked away from the city noises. Perfect for a couple. You must be able to walk up the two floors. So if you are traveling with a lot of luggage, this might be something to consider. It was very hot in Paris when we were there and there is no airconditioning (which is not normal in Europe anyway and this is a traditional Parisian building).
We absolutely loved it and will definitely come back! 5 *****