Superb base for exploring the heart of Paris - surprisingly quiet given it is located close to many cafes, restaurants and bars - plenty of supermarkets and shops within 10 minutes walking distance, as is the Seine, Pont Neuf, Louvre and so much else.
The flat itself has everything you need, not just the basics but also including Wi-Fi, Nespresso machine, a fan to keep you cool at night, and secure double door entry to the stairwell.