The location of apartment is superb, hole five star; you are in the middle of Latin quarter, alongside Pantheon and very short way to Rue Mouffetard and Place de la Contrescarpe. The modern apartment is also very good level, the beds were wonderful. There are two showers (one in bathroom, one ensuite with one of the bedrooms) + toilet cabin. So it easy to get your own privacy. If its rainy day or you are really tired, you have two very big tv's in the main floor (living room and one of the bedrooms) and one more in downstairs all with Netflix and international channels. It is also very easy to entry, no stairs at all: it's right on the street level - and it is quiet neighborhood. Next door is wonderful boulangerie & patisserie, please try it.
Only annoyance was that we could not check in at the right time and we have to wait two more hours when we arrived. However the office was very helpful and although they did not answered to my calls, they called me back right away when I wrote e-mail with my mobile phone to them. So keep all the info with you!
Next time when I go to Paris, I hope that the apartment is free - I want definitely spend my holiday there again.