Excellent, lively location looking out onto a small square with a waterfall and cafes. Plus right next to a really fun street full to the brim of small shops and restaurants. Take ear plugs if you're noise sensitive - although we loved all the noises of Paris.
A small theater (in French) two-doors away. Public transport close by - or easy walk to lots of places. 35min walk by foot to Montparnasse Station, for example. Large apartment with all the basics. Very comfortable bed in the living room.