We ordered a suite for a couple of days in Paris (3-4 people). We have stayed at several other hotel suites in Paris, this was definitely at the bad end of our experiences.
Pro’s: a bed to sleep in. Parking if you’re arriving by car. Several stores and malls close by for shopping. Gennevilliers is outside Paris central, but you can get there using metro / bus / train for 40-45 minutes.
Needs improvement: rooms are not thoroughly cleaned. Cleaning seem to be superficial, lack of vacuuming of carpet, lines of dirt inside toilet and in the shower. The lack of dust being removed by vacuuming and so on triggered the ones with allergies in our family. Beds and covers have marks of bodily fluids which were frankly disgusting (blood and other marks). Never experienced that in any other hotel. Suite did not have a fridge, minibar, iron, safe or any other normal necessities expected in a suite. Only one trash can in the bathroom.
Receptionist were nice enough, maids did not speak a word English.
N/A: Did not try the bar / restaurant / fitness room or breakfast.
I would only recommend staying here if you are arriving by car, and have less options central in Paris. Nor do you need to store items and so on. I do not think I will stay here again, better options around Paris.