Lovely, eco-friendly hotel in the 7th arrondissement, near the Eiffel Tower, the Hôtel des Invalides, and a number of other sites. It's also very close to the #69 busline that can get you a good city tour for the price of a RATP ticket.
The hotel has decent rooms and clean bathrooms, a good breakfast buffet, if you order it, and the staff is friendly, helpful and multilingual. A few good restaurants and bars are within walking distance. Be aware that there is no elevator in the hotel and the stairs are a little steep and tight.