Our stay at Mathildes place in the heart of Paris was a perfect stay. With a total of 10 people we fitted nicely in the combined 2 apartments. These are very spacious with various options to sit together or read a book. A bit more daylight in the living rooms would be great, whereby the bedrooms have all large windows.
The location just between les Halles and Pompidou is terrific, at walking distance from loads of the major Paris attractions, with good places to eat and have a drink just around the corner. Accessibility by car is problematic, be quick when unloading and load your luggage.