This is our 4th stay at the Mandarin to celebrate our anniversary. I noticed some distinct differences from our last trip when we were upgraded to a suite after booking a tai pan level- room, and receiving a complimentary bottle of champagne. Neither of those happened this year. I know I should not expect "freebies", however, our loyalty to this hotel among the hundred+ in the DC area should account for something? We upgraded to a suite on our own and walked away with a hefty hotel bill (which should be expected). Anyway, the spa was wonderful, as usual. Room service was great. We went to CityZen last year, but opted to stay in this year. Good time overall.