We stopped, as we were told, on the 4th day after the opening. Even the builders were still working. I can say that it is 13 km from the sea, but it carries a free transfer to La Mer beach.
Read reviews, mostly bad. Come on, I thought you can't please everyone. Basically, I'm not picky. I took a chance and bought a ticket, especially (all inclusive) for 300 euros per person.
Very nice and cozy hostel. Located in the 15th district 4 km to the Eiffel Tower. 500 meters to metro and LIDL store. Very quiet and calm area. There are separate 2-bed rooms with their own toilet and shower for a couple.
On the plus side. . really quiet and peaceful. There is no need to run and borrow sun loungers, it is always full. Of the minuses... To the sea 5 minutes. through a nearby hotel.