I spent a wonderful two months in Paris at Sonia's place. Sonia was a kind and responsive host, who was always available when I needed her. She has a good knowledge of the neighbourhood and has many recommendations for things to see and do nearby.
The apartment is exactly as described - it is comfortable, spacious, clean, light and private and has everything you need for a comfortable stay. The neighbourhood is safe and quiet, but with many supermarkets, bakeries, shops and restaurants within easy walking distance. It is well connected by plenty of nearby metro, tram and bus stops so it's very easy to get to other parts of the city.
I would definitely recommend Sonia's place for any trip to Paris, long or short, and I would happily stay here again.