Some really good black teas, I give them credit. Nepal is good. Some others were ho-hum.
As a 'tea room' it is as sterile cold and corporate as Apple Store, This does not encourage lingering while people watching or reading a book, it's buy and get out. The staff are always nice, because they listen and seem to know their products.
The non-consumable merchandise they sell seem not that great and overpriced, but at least they support a good industry and a most civilized, worthwhile beverage. And if you don't drink tea they have a ton of flavoured infusions that some people are crazy for, hot or chilled.