Martine's apartment was just as described and perfect for our purposes. It was clean, light and airy and centrally located to the major attractions of Paris. Metro stations are within easy walking distance. Supermarkets, patisseries, cafes and the Grenelle markets are also nearby.
Martine was very friendly and welcoming. She had provided basic grocery items and toiletries and even a bottle of wine. She arranged taxi transfers for us both upon our arrival and departure which we greatly appreciated.
We hope to be able to travel to Paris again one day and Martine's apartment would be our first choice of accommodation.