Well, I had to stay in Cergy and was short on money, that's why I booked this hotel. But please if you want to stay more then 2-3 days, and are ready to pay more than 50euro per night, choose other location. Cergy itself is depressing and unsafe, this hotel as well, I wouldn't recommend a girl traveling alone staying here. The wifi was ok, but had to ask at the reception, how does it work, wasn't explained from the beginning. The staff was mostly unfriendly, the room very small and the bathroom a little dirty and very small. The checkout is till 11:30, we were disturbed by the cleaning lady at 11, she opened the door twice without even knocking.
The location (close to the subway, to supermarket), cheap. Good French-style breakfast for 5 euro.