We (family with kids 7 & 9 years old) stayed at the apartment for four nights and had a great time. The place was tidy and clean, but a little fusty. Information and communications with host were impeccable.
Superb location in the quartier latin, a couple of blocks away from the busy/touristy Rue Mouffetard. Right next to the Jussieu metro and the wonderful park Jardin des Plantes just two blocks away. Lots of cafés, restaurants and grocery stores closeby.