If you're ok with a personal space of 1 square meter, go ahead. The rooms shared by 6-8 persons can be complicated. But if you leave very early and come back very late, it's OK!! Poor flexibility of most workers, e.g. couldn't buy a coffee for 1,45 instead of 1,50. But the rigidity is typical in Paris natives, so that's ok too.
Otherwise, kind people and nice atmosphere in general!!