My friend and I had a wonderful time in Paris at Martine's apartment. The apartment is very beautiful, spacious and warm with stuff you can not take for granted in a Parisian flat such as bathtub ans elevator (not irrelevant when you're on the 5th floor).
The place is very well located in a quiet cozy area, 2 minutes walk from the Metro station with a lovely pastry shop and bike rental station right next to the apartment.
Martine was a great host, she was very welcoming and took care in advance to every little detail - from towels and kitchen equipment to even sugar, coffee and jam for the morning baguette and croissant

You wont regret it