So while I had quite a dramatic arrival - my booking had been deleted because my credit card had been replaced, I speak very little French and the manager has very little English, but they were very kind and patient and were able to sort me out.
Be prepared, the rooms are much smaller than the pictures make them appear, but as long as you are prepared for that, there's nothing wrong - staff is friendly, there is usually at least one person on a shift who has a little English (or is willing to take a stab at it) and the soundproofing is excellent (I actually had to leave the windows open because I need a bit of noise to fall asleep, and it was just too quiet for me with it closed).
It's also conveniently located across from a small mall with a Carrefour market, which is a great place to buy necessities during your stay, and not too far from the Port de Montroeil (sp??) Metro station, from where all of Paris is your oyster. There's also bus stops nearby but the one time I needed to take a bus, it didn't stop there, so there's that.
They are also willing, for a small fee, to stash your bags after checkout so you can explore a bit more before leaving the city.
All in all everyone was really great, and I thoroughly enjoyed my stay.