My wife and I stayed at Myriam’s apartment for about a week around Christmas.
Here is what we found to be exceptionally good:
-	Location: lots of key sights within walking distance (Notre Dame, Pompidou Center, Louvre, Orsay Museum, Marais area, Left Bank area) and others (e.g Eiffel Tower, Montmartre, Opera Garnier) are easily reachable through Metro as the entrance to a station for Lines 1 and 11 is less than 100 ft away; regular supermarket and “mini-Whole Foods” (called Naturalia) is just about 100 yards away; Central tourist office with lots of maps and useful info is across the street in the Hotel de Ville building
-	Bed in the bedroom: king size with mattress that feels truly orthopedic and super-comfortable
A few things that made the stay less convenient:
-	No microwave oven
-	No real closet (though there were small triangular corner shelves and portable rails for a few hangers in the bedroom)
Other things worth mentioning:
-	Fast and reliable Wi-Fi
-	Elevator in the building starts from the 2nd (American) floor, i.e. one has to climb stairs one floor up from the ground to reach the elevator
-	Even though entrance to the building is from one of the busiest streets (Rivoli) and walls within the building do not seem to be soundproofed, it was surprisingly quiet inside the apartment during the day and night
-	Instead of “regular” iron apartment has hand-held steamer that we found to be difficult to use