I spent four nights at Gramont Opera. Generally, I am satisfied with the service of the hotel. The room is spacious and comfortable. Metro is just stone throw away from the hotel. What I disjusted was the housekeeping servant, they spoke very loudly at the corridor. As door was not that sound-proof, I was awaken by them every morning. The hotel didn't provide us the "DO NOT DISTURB" sign. One time, when i was still on the bed, the servant "trespassed" my room without knocking door.