I had a great time in Martine's apt. I came with my boyfriend and left with my fiance :)
The apt is exactly as it appears in the pictures. However, it was just a little smaller than I was expecting. But it was a perfect size for the two of us. The apt is on the 7th floor but there is an elevator to get you there. It's small and fits just two people. I was nervous on my first trip but it became fun for us. But it's very safe and reliable so no worries. The balcony was a dream and we had a few meals out there. The kitchen and bathroom are both equipped with towels and plenty of sheets and quilts.
The street is quiet. Even though the apt is a stone's throw from the Sacre Coeur, tourists leave the Anvers station and walk straight to the basilica. So even though you can see them from the front door, they never disturb you. There is a grocery two blocks down the road so it was convenient to shop for our necessities. There are also several nice restaurants between the Anvers and Abbesses stations. We also made great use of the metro...super convenient
We had a great trip and would definitely want to return in the future.