Zara's apartment is very near two metro stops (either Line 4 or Line 12) and this is great as you have a choice depending on where are coming from or plan to go. It is also in a really interesting part of Paris and a direct walk along the same street to the Sacre-Couer which is so convenient!
More importantly, the room although small,is lovely! The bed and comforter were so soft and comfortable, I slept extremely well! As for the bathroom, it almost felt like I was in a five-star hotel. You will not lack anything that's for sure! Although I did not get to speak much with Zara, she seems like a nice person and provides very sufficient information for my stay. She is also flexible with the timings for check-out which I really appreciated. Highly recommended!!