What a lovely stay! By far the most beautiful apartment we've stayed in since we started using airbnb two years ago-- both inside and the gorgeous patio outside. It was remarkably clean too. Ji was very helpful and communicative, and she left us coffee and biscuits which was very sweet. The one downside is that the hot water tank for the shower is VERY small. It ran out of hot water after about 10 min, which isn't enough for 2 people to use.

As for the area: Montemarte is nice, not my favorite neighborhood as there aren't a lot of great restaurants and bars, but it's close to Gare du Nord and other sites that it's easy to get around.