We were 4 friends staying in the flat of Julia.
The location is amazing. The best location if you want to discover Paris, without the touristic part of it. We visited almost everything by foot and had lots of restaurants and bars around.
Communication with Julia was easy and fast. However, we faced some issues upon arrival, since she was not around and was hard to communicate with the one who should be there for the check in, who arrived later.
However, the apartment in reality differs from the pictures and the cleanliness can be clearly improved. The furniture is extremely used and not much taken care of, and it seems that it has just been cleaned very roughly between guests and for years. For example: the sofa textile was very old, dusty and broken on the side, the curtains didn't seem to have been cleaned in years, the floor in the kitchen was sticky, the windows were very old and blocked, so we didn't manage to open them... Additionally, in the bathroom on the upper floor, the curtains to provide a split from the bedroom were broken, which does not allow a private area while taking a shower and makes the water to splash everywhere.
I do believe the apartment has potential, specially since it gives the Parisian flair and the location is great. However, it needs to be properly cleaned and taken care. In the current status, it is too expensive for the quality you get.