The house/apartment was extremely spacious, which is very hard to find in Paris. 20 could easily fit comfortably (although you can only seat 12 or so at the table in the main house). Good proximity to metro so we had no problem getting around. Great for a large family trip.
The host was communicative and friendly, she showed us around and made sure everything was in order at check out. It would be easier if there were a lockbox so we didn't have to meet at a certain time.
For the price we would have expected it to be in a better state of repair with higher quality furnishings. There were many things that were just a 'little broken', but no showstoppers.