We loved the apartment!
Location: just a block away from a metro stop in Monmartre. Grocery stores, restaurants, and bakeries were all very close. We loved getting fresh bread and pastries for breakfast each morning.
Space: Plenty of room for our family of four (including two teenagers). Each bedroom has its own bathroom, but the kids preferred to use the third bathroom because it was more private.
The apartment was also tastefully decorated. Each room had its own personality. The windows and balconies gave the apartment an airy feel. And the shelves were full of interesting books, many in Greek, some in French, and a few in English.
The kitchen had coffee, tea, basic cooking supplies (spices, oils, etc). There was cold water and a bottle of rose in the fridge for us as well. Bathrooms had some body wash and shampoo, but
I would not count on these as they seemed to be leftovers from other guests.
The neighborhood was quite noisy on Friday and Saturday nights. However, this was a minor annoyance since we were too tired from our busy days to care very much. Overall, this was our favorite place to stay on our European trip!