I liked this place! Located on a pleasant and quiet street in an otherwise fairly lively neighborhood –a couple minute walk from the Parc du Champs de Mars, and perhaps 10 to the Eiffel Tower– it’s about as off-the-beaten-path as you can find in Paris.
Rooms are cozy, free wifi throughout, and an extremely pleasant owner and staff. There are plenty of bars/cafes in the vicinity that won’t break the bank, along with a few wines shops that will. Nearest metro is Ecole Militaire, and you can order a shuttle to De Gaulle Airport at the front desk (17 EUR, about 40 mins).
I think I’ll definitely return.