We stayed at the Adagio Opera, in a 1 bedroom apartment on the top flooor, for 4 adults.
This was my third time in Paris, previously I stayed in hotels, which though adequate, were very small and cramped.
Pros : Location is great, close to Rer A and E and the Metro is within 2 mins walk. 2 Monoprix supermarkets, Galeries Lafayette. Spacious apartment for Paris standards, full kitchen with utensils, microwave, fridge, if you wanted to cook, or make breakfast etc...separate toilet to bathroom with bathtub - but it was a small tub and high to climb in and out so be careful not to slip. Clean. Beds were comfortable, linen supplied.
Can catch the Roissy bus from the airport 2 mins walk to the bus stop.
Cons : We did not have a problem, but the noise from the streets may bother some. Also for stays of 4-7 days they do not provide room service or cleaning, it is at an additional charge. For stays of 8 or more days, they will clean on the 7th day only.More