A great location just a stone's throw from the southeast corner of Luxembourg Gardens and, in the other direction, the Pantheon and the charming Rue Descartes; a half-mile from the lovely old shopping street Rue Mouffetard. A mile from Saint-Germain.
Great coffee around the corner at Numero 220, and at Dose on Rue Mouffetard. Great bread around the corner at Solques Bruno (though their croissants are a little denser than I like); next door to Solques Bruno is a great Italian deli, Ugo Traiteur. Many other great bakeries, Lebanese places, and much more within a three-minute walk. And you can get every delicious food (plus all supermarket items) on Rue Mouffetard.
The apartment gets a ton of light, especially in the morning--the living room faces east and has many large windows. The bedroom has good blackout drapes so no problem sleeping in if you like. It was warm during part of my stay but with the windows open there was a good breeze and the place cooled down at night.
Good water pressure, though I think it might be time for a new shower head--the spray from this one is a little scattershot. The tub is small but serviceable and has a shower wand.
I don't cook, but if you do, I think this apartment would be great. Nice kitchen and a ton of tools. Mostly I used the refrigerator, microwave, and the Nespresso machine (remember to bring some capsules, though Nespresso stores are easy to find in Paris, too).
The elevator is tiny but gets the job done if you don't want to deal with five flights of stairs. Otherwise, you can get a bit of exercise every day.
The bed is pretty firm; for me, a foam topper would have been nice. Obviously that's a subjective thing.
As another reviewer noted, you can definitely hear the neighbors above, though they weren't terribly loud and it wasn't an all-the-time thing. I tend to be sensitive to that kind of thing and I didn't find it particularly annoying.
Tatyana was a pleasure to deal with--prompt and accommodating.
Overall, a really good stay--merci, Tatyana.