The apartment is located right in the city center, in a cosy street with basically everything you need. There's cafe's for breakfast or lunch, supermarket right beneath the house and plenty of bakery's around. It's a short walk to Les Halles or Grand Boulevard, everything is at walking distance and otherwise you could take the subway.
The apartment itself is what I'd call Parisian, there's a courtyard, flowers in the windows, nice wooden floor. It's fairly spacious, not huge. Compared to my Amsterdam apartment, it's about the same I think. Marianne was very welcoming, and contact with her was good! Everything was a bit above expectation actually, she likes the little details. I loved our stay there, and I would recommend it to anyone!