Montmartre is my favourite district to live in as the area is peppered with little bakeries and shops, all within a fifteen minutes walking distance.
Along the same street lies the famous La Grenier A Pain, which has really good baguette (crispy on the exterior- you can really hear the crunch as you bite into it- and a relatively fluffy interior ), but what I love most is the croissant.
A very convenient district as it is also a walking distance to the famous Sacre Coeur (which is beautiful to visit at night), although the walk up the hill can be a discouraging (If you're carrying things or if you've been tired out from an entire day of walking).
The 6 flights of stairs to climb daily is really really exhausting though and can be difficult, especially if you're coming with luggage, but Thomas was a gem and helped with mine.