Excellent value for the money. The rooms are nice and clean but small, bathroom was quite nice but could be cleaner. Breakfast at 8€ is decent, some 4 types of good hams, lots of pastries, jams, fruit, cheese, yoghurt, coffee/tea.
The negative is that Courbevoie, where it is located is actually not in Paris so taxis have a higher rate. The hotel is actually is quite far from la defense, certainly not a walking distance with your luggage. The bus stop from the hotel is 5 mins by foot, and 10mins by bus). Therefore if you're in a rush, and need to go by taxi, a trip from the hotel to la defense is about 10€ and a trip from la defence to the hotel is around 8€ (they charge for coming to the hotel to pick you up). A taxi from Mercure hotel (near bus stop) is about 5€. If you are planning to be in a rush all the time, and anticipate travelling by taxi to the metro you could be looking to spend some 10-20€ daily on taxis, which could turn out to be cheaper to take the Pullman or sth very close to la Defense. Its sort of a pity to lose like 1 hour on buses to la defense every day (wait time + travel). I would recommedn writing down bus arrival times at the bus stop, bot to la defense and from la defense.
But the hotel itself is very pleasant - you actually want to come back and lie on your bed after a whole day of walking which is important.
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC