Me and my two children started in the apartment for 4 days. We really liked the place! It is very close to the metro and busses. And a 10 minutes walking from gare L'Est and Gare du Nord (the RER comes from Charles du Gaulle). No problem getting to the Eiffeltower, Secre-ceure, or EuroDisney.
The sofabed was comfortable and we used the lower bunkbed and it was also comfortable. The linnen and towels were very nice!
The kitchen had everything, potts and pans and we made dinner a few times. No oven. It had a refrigerator with a smal freezer compartment.
The bathroom is good, in the smaller size but that was not a problem for us. It also had a washing machine.
There is a TV, that we didn't use. The wifi was good.
The apartment it's on a busy street with lots of cafés, patisserie, restaurant and around the corner is a small grocery shop down the street. The apartment is still very safe, as you need more than one code to get into the building. And the apartment has window to the courtyard, so no street noise. It is a typical Parisian house, only wooden stairs and an old charm.
It's a small apartment but used to its best! The communication with the host was very fast and good!