If you want luxury: maybe look for something else. If you are looking for a small but cute, quiet homebase for your visit in Paris - you just found the perfect place.
15 Minutes by Metro from Gare de L'Est, a quiet, non-touristy neighborhood, yet the Metro takes you to Louvre / Pont Neuf in about 20 / 25 minutes, 2 supermarkets within 5 minute walking distance. When you return from a day of exploring, you can take a rest in the astonishingly beautiful park Buttes-Chaumont with wonderful old trees, wich is just across the street.
On top Juliette is a very nice person and answered all our questions on arrival (hope we didn't keep her too long).
We'd return to Juliettes place without hesitation.