Roman deserves his top rating as a host: he keeps in near constant touch, can be reached virtually any time, is consistently pleasant, and provides guests with an abundance of really useful information.
The apartment truly is a haven of peace, even though the neighborhood is alive in the evenings with terrace dining and socializing. It has four large windows opening on the mini courtyard. The bed is very comfortable indeed, and there is a dishwasher, stovetop, microwave, and good washing machine (but no dryer). Plus all the dishes, tableware, and cutlery you could ask for. (Note that the apartment can only be reached by one flight of rather slick old wooden stairs with a tight turn.). Dining in the apt is a bit awkward since there is no table. But you can use three stools at a counter facing the kitchen. But as for dining, see below.
The area is also blessedly free of cars. Literally around the corner are two excellent restaurants: Pharamond, a bastion of tradition, one of the last relics of the old Les Halles. Then there is Pirouette, creative in the best possible way, an outstanding small restaurant with modern decor.
For morning coffee and pastry, a good choice is Bo & Mie, a 5-minute walk.
Two blocks away is rue Montorgueil, which has a superb cheese shop (La Fermette), patisserie (Stohrer, the oldest in Paris), charcuterie shop (Cul de Cochon, with the best cooked ham I have ever tasted), and many other shops and cafes. This street is pedestrian only, and very popular with Parisians.

The apartment is a few steps away from the Chatelet-Les Halles transportation hub, from which you can reach just about anywhere in Paris by Metro or RER.
There’s no doubt that you have here a 5-star Paris apartment (and host).