Having read many negative reviews on OpenTable and Yelp I didn't hold out much hope for my meal and almost cancelled. I'm glad I didn't.
The atmosphere is warm, calm and relaxed. To start I had tasty dish of steamed mussels with chorizo that was more that though not mind blowing with tasty, perfectly proportioned and had plenty of chorizo to enjoy. I ordered the delicious prosciutto and fig "cold" pizza for my main with a a crispy light base and so much topping I easily filled my pig-based food quota for the month. The truffle oil just managed to not be overpowering. I was glad my server persuaded me not to change my mind when I considered changing my initial order.
The sticky toffee pudding was the only part of the meal that was disappointment. Though not unpleasant the sponge was not light enough nor the caramel sauce sufficiently buttery as it should be and sadly it seemed like both my and my wife's dessert order had been left out for a while before being brought to the table and it they'd both cooled and the ice-cream had melted substantially.
Apart from that slight slip in table service our waiter, Justin, balanced attentive knowledgeable service without being overbearing or intrusive on our evening.
One minor gripe, the meeter and greeter was slow to attend us and not at all welcoming to the restaurant but once seated we were happy.
I would recommend Postrio for its relaxed and intimate atmosphere which gives you the warmth and buzz of being in a restaurant without the bustle many other places have. The food is significantly better than many other places in the Union Square area and overall there is no sense of the tourist trap vibe I feared there would be.
If you own or manage Postrio, register now for free tools to enhance your listing, attract new reviews, and respond to reviewers.