My sister and I had a lovely stay at Martin's place! The apartment is so cute and French (it's very small, but that's part of the charm). The location was great - right in the middle of Montmartre, close to all the highlights and the Metro, yet far enough from the main streets to make you feel like a proper local. And Martin was a great host! We even met up over drinks one night and had the best time.
I would totally recommend this stay to any of my friends! And next time I'm in Paris I know where I want to stay.