Julia's apartment is lovely and you cannot beat the location (just across the Seine from the Louvre!). Julia was incredibly kind, responsive, and was a thoughtful and caring hostess.
We were two friends sharing the apartment which worked out fine but I would say the apartment is better suited to families since the bathroom is inside one of the bedrooms and not in a shared space (only really a problem for us in the middle of the night).
We also arrived to Paris during a heatwave and the apartment has no AC, so manage your expectations accordingly depending on travel dates/weather. Julia did a wonderful job of providing fans and sharing survival tips so we were as comfortable as she could make us but it was still pretty warm.
Overall would recommend the apartment and would stay again!