Location location location! You will not regret booking Sam's place because of how convenient it is to everything around.
While there is no elevator (and you'll want to be careful on the stairs), this apartment had cute Parisian views, is super close to metro lines 3 and 4, and walking distance to many restaurants and boulangeries, and only 10 min to Châtelet Les Halles if you're taking the RER from CDG airport. Compared to other places in Paris I've stayed, it feels big and the living room sofa turns into a bed.
I would stay here again!