My sister and I stayed here for a long weekend trip to Paris. The apartment is certainly a great deal for the price. On the metro, it is about 20-30 minutes away from most major attractions like the catacombs and the Louvre. Le Marais is a beautiful neighborhood with cool shopping and lots of restaurants.
The apartment is fairly true to the photos. There was not a coffee table like in the photos but we didn't mind that. A welcome kit with tea bags, nespresso pods, and chocolate was provided, which was a lovely touch. The amenities in the apartment are nice and all seem very new. All of my showers were lukewarm during the stay though my sister said she did manage to get the hot water to work (perhaps because she always showered second?). The bed is reasonably comfortable for a sofa bed and the price of the apartment.
Our biggest complaint was that when it's hot outside, it's very hot inside the apartment. There is a fan but it did not make much of a difference.
Other than that, the space is pretty quiet and a good value for the money.