I was pleased with my stay at this apartment. If you want to stay in the Marais close to everything, yet away from the noise, this is a great choice.
I wouldn't exactly call it "luxury", as everything is basic, very spare, and Ikea from top to bottom. No art or individuality. This is exclusively a short term rental bereft of identity--which honestly has its upside and is a good thing. There are big pluses, like lots of windows, air, brightness, great heaters that make it toasty warm, and mainly the bed was super comfy by American standards. That is no small feat in Paris at this price point, and we just didn't want to get out of bed in the morning, and slept so well.
Having so many perks (dishwasher, washer/dryer, good sheets and comforter) is great too! The kitchen was well stocked, and we wanted for nothing--sugar, coffee, honey, all utensils. Even a Nespresso, coffee and tea kettle. Wow. You can really cook if you want, easily. The 4 floor walk-up is not to be minimized, at all, but to be expected for a good bargain in Paris, which this is.
The host and his helper were just as nice as can be, and super responsive. That's so important. Only issues which prospective guests should consider (which were no big deal to us) were 1) the hot water ran out, 2) if you are looking for true luxury, you'd have to pay more for it, and I'd rather have bright and open, sky and rooftops, which this place has in spades, 3) the photograph of the bathtub is misleading, as you cannot in any way bathe in it, maybe just squat, as the shower itself is quite compact, and finally 4) I read some reviews before I arrived where a group of four people stayed here and omg I find that utterly impossible to imagine. It's fine for two people sleeping in the same bed, but anything more (other than maybe kids) would have been really crowded in this cozy space.
I felt the value for this place was just right.