Right, there are two sides to this place.
-When it's sunny, although nice and bright, you're cooking in the grand central conservatory, not pleasant.
-Some of the cushions obviously had coffee spills, not cool.
-The poofs, they are the wobbliest thing to sit on EVER, i've been on rodeo bulls that are more stable, my advice would be not to sit down whilst holding your drink, they were probably the reason for the cushion spills.
-They play loud house music, which given the contents of their smoothies being excellent for hangovers, the tunes make it a huge oxymoron.
However,
The staff were quick and friendly, and my milkshake smoothie was super tasty, It was;t rammed with ice a la overpriced starbucks, with the odd mix of fat and water bulking it out and giving you brain freeze, it wasn't packed with ice-cream, so it didn't feel unhealthy, just fruit and vanilla milk, and it was still cheaper than the less fruit-packed equivalents at nero/costa/starbucks. Coffee is good apparently too.
I'd probably take my drink to go next time, to avoid tipping it down myself on ridiculous seating, but i'm a big fan of the product, even if not so much the setting. read more