We staid for 4 nights at this apartment at 32 rue Gabrielle in the Montmartre and enjoyed every second of it. It is very well situated half way up the hill next to the Sacré-Coeur and just below Place du Tertre. In the same street there are 2 very nice restaurants which offer traditional French food so
you do not have to go very far to enjoy French cuisine. There is a minimarket there as well and the nearest boulangerie for your croissants is only 5 minutes down hill. The stairs around the Sacré-Coeur are steep so keep that in mind if your not mobile although you can take the cable car uphill at the Sacré-Coeur with your public transport ticket and go down 2 stairs to end up at Rue Gabrielle.
The apartment itself is big enough for 5 people. I staid there with my wife and 3 kids in the age range of 19 to 23.
The communication with Marie prior to our arrival was very good, we arrived around 12 o'clock in the afternoon and the apartment was already for us. It was clean and had 2 comfortable double beds and a sleeping couch in the living. Our daughter slept on it but didn't convert it into a bed. She just sleeped comfortably on the couch. The kitchen is well equipped for breakfast and the bathroom is clean with a nice hot shower. The 2nd bedroom has a small sink with mirror.
All in all we can certainly recommend this apartment. The price-quality ratio is good especially considering you are in the heart of the Montmartre.