I had a great time staying at Fred's — he's a really nice guy and he was a lovely host. He went out of his way to make my check-in easy and was always really fast with communication.
The area Fred lives in (which borders the 7th and 15th arrondissements) is lovely — great for having an authentic experience in that lots of locals and families live in the area. It's also really convenient, with multiple metro stations around the corner (and a view of the Eiffel Tower and great bread just around the corner!)
Fred's place in and of itself is lovely and feels very 'Parisian' in its furnishing and
Haussmann-style windows and balconies. It's also amazingly clean — Fred's apartment is utterly immaculate.
I'd highly recommend staying with Fred!