We stayed for 4 nights and enjoyed our stay. The apartment was clean and had everything that was listed on the page. They were extremely responsive, responding in a matter of 10 seconds every time we messaged them.
To provide information to others, there are some things regarding the apartment that others should know about --- absolutely nothing wrong that the hosts provided.
The apartment is in a very convenient location, only two blocks away from the nearest metro station. However, it would be good to note that this specific area (St Denis) is known for working women standing around on the streets. They were everywhere at night (even in the daytime), standing in mini skirts in front of random buildings, stores and even McDonalds. I personally did not feel "danger" since I grew up in NYC, but I think anyone who stays here would want to know this info.