Great apartment, it's good to get a proper double bed in a studio! Don't be put off by the lowering bed system, it's a very comfy bed and gives you much more room in the apartment.
Only one street away from the bustling Champs Alyssee and Arc de Triumphe yet the Rue de Lord Byron felt very quiet and safe, as did the apartment building. We had 4 very peaceful nights sleep.
Check in was good, we were quite early into Paris and were allowed to drop our bags so we didn't have to walk around with them. Email communication was very good prior to stay and during.
Apartment very clean and tidy.
A perfect apartment for a couple and/or for anyone wanting to explore Paris. Metro station Charles de Gaulle Etoile was literally just around the corner.