The Palm Court is beautifully decorated in gold and white, with yellow and cream furniture to match. There is an opaque glass roof that makes the room very light during the daytime even in winter. You have to book some weeks in advance particularly if you're a largish group (we were 5), but there's plenty of room at the tables when you sit down.
The food is very tasty, with never-ending supplies of crust-less sandwiches, scones, and cakes. I'd never had a cucumber sandwich before, but they're unexpectedly delicious; I'm sure they tasted of mint. And the clotted cream and strawberry jam for the scones was scrumptious :-)
But I think the most memorable part of the experience is the wonderful service. It's the kind of service where your serviette is unfolded for you, where more food is proffered, and where pots of tea are replenished just as they begin to empty. It's all done with a cheerfulness which makes you feel comfortable, and I think that's the key to good service - making a guest feel welcome.
Oh, and if you do decide to try it sometime, do visit the toilets which are an experience in themselves.