We stayed at Hotel Opera for 4 nights during the Olympics. The price varied due to the bookings being staggered as our itinerary changed but the hotel accommodated these changes so that we could remain in the same room. We found the hotel staff to be approachable and helpful. The hotel is about 10-15 minutes walk from Gare du Nord and we found a large number of good places to eat within a few minutes, one that was recommended to us, Cafe de l'Eglise served us great food and is in a lovely location, definitely worth a visit! The hotel has a nice lobby where we had a drink on returning one day, and our hotel room itself was comfortable, with good air conditioning and suited our needs. We took breakfast at the hotel each morning which was simple but good, and allowed us to get away early each day. Only slight negative was that we didn't have hand soap for the bathroom so we just used the provided shower gel from the shower