The apartment is located in an amazing area, central Paris with everything you could need in the vicinity. It's also right next to the metro stop Rue du Bac on line 12 with multiple bus stops surrounding, making it easy to get around.
For living, it's very convenient, with multiple grocery stores right around the corner. It's also a pretty quiet place so you can work in peace. The kitchen is a great size and having it upstairs separate from the bedroom makes the place feel bigger too. In winter, it can get a bit cold but nothing a couple of extra layers can't fix. I spent a couple of confinements there and so I'm very well acquainted with spending long amounts of time inside the apartment and found it suitable.
As for sight-seeing, it's in a great location, just off of Saint Germain-des-Prés, where you can do loads of shopping, and just down the road from le Louvre. Perfect for anyone looking to be close to attractions while still staying away from the overly touristic neighbourhoods.