We stayed for a month at Brigitte's apartment. The location was great in terms of easy access to 3 Metro lines (5, 6 and 7) as well as some buses (we bought Navigo Decouverte passes which really made travel easy and included our ride out to the airport). The area is just outside the central tourist area, so we felt like we were getting a more Parisian vibe and yet we could quickly get to any of the big tourist locations.
The apartment is so nice and bright and with the balcony there is a nice table with two chairs where we sat out several times. The window in the kitchen faces the back court so you can get a nice cross-breeze through the apartment if it is hot outside.
The well-equipped kitchen is big enough that we were able to both work on cooking together and we really liked the induction stove-top.
There is easy access to a variety of supermarkets and there are several fresh produce markets that happen regularly in the neighbourhood.
Brigitte was very friendly and accommodating which made our stay even better.
There's a small Asian neighbourhood that is not far from the apartment and we walked there several times to shop and eat. There is a Lidl there too - which is great for picking up a bargain food item or two.
One of the fun things about the 13th arrondissement is the interesting street art in the way of huge murals. A new one even went up while we were staying in the apartment. Be sure to look for the mairie's website with all the art locations - hunting for them was part of the fun.
The wifi works very well and there are enough English TV stations on the cable to keep up with world news.
If we are ever back in Paris we'll check first if Brigitte's apartment is available on airbnb.