I have stayed at 11 Cadogan Gardens a few times now since 2020 and since the change of management under Relais & Châteaux, I am disappointed that the general service of the hotel has gone down. Toiletries were not replenished the next day (it was obvious the cotton pads were finished) so I had to ask the reception for it. Turn down service was lacking, on the 1st night water bottles were not replenished and neither were the coffee. 2nd night, no one even came to do the turn down service. Someone just opened my door without knocking and handed me a bottle of water and left. That was it. My bed was left undone as there was no turn down service on the 2nd night.
Also, for a supposedly 'luxury' hotel, why isn't there a fridge in the junior suite? Especially in summer in this kind of heat, you'd expect every room to have a fridge. It's not pleasant drinking room temperature sparking water when it's 30 degrees outside.
Restaurant service was not great either. Breakfast - I was sat at the table for over 15 minutes without anyone coming to take my order. I had to flag a waiter down, and the breakfast was not busy at all.
I've been a loyal customer at 11 Cadogan for years, but I don't think I will return now. The stay, and the staff used to make every guest feel special and memorable - there was a personalised touch, now it's forgettable and impersonable. Just like staying at any other highly commercialised hotel. What a pity.